This paper presents a novel application of Data Envelopment Analysis (DEA) to analyze the impact of oil price changes on the efficiency of banks. Factors that affect the efficiency of banks have been of interest to researchers in various geographical regions. With a special focus on oil price changes, we investigate the determinants of bank efficiency in the Middle Eastern Oil-Exporting (MEOE) countries where macro-financial conditions are substantially affected by swings in oil prices. Our analysis consists of two stages: (i) measuring the efficiency scores of banks using the Semi-Oriented Radial Measure (SORM) DEA model, (ii) investigating the impact of alternative indicators of oil prices on the estimated efficiency scores after controlling for key bank-specific and country-specific variables. The analysis is based on an un-balanced panel data of banks operating in the Middle Eastern Oil-Exporting countries over the period of 2001–2011. Our findings reveal that oil price changes affect the efficiency of banks in the MEOE countries through both direct and indirect channels. In addition, we find that Islamic banks in the region are less responsive to oil price changes than commercial and investment banks.
Mots-clés : Data Envelopment Analysis, bank efficiency, oil price changes, the Middle Eastern oil-exporting countries
@article{RO_2020__54_3_719_0, author = {Kaffash, Sepideh and Aktas, Emel and Tajik, Mohammad}, title = {The impact of oil price changes on efficiency of banks: {An} application in the {Middle} {East} oil exporting countries using {SORM-DEA}}, journal = {RAIRO - Operations Research - Recherche Op\'erationnelle}, pages = {719--748}, publisher = {EDP-Sciences}, volume = {54}, number = {3}, year = {2020}, doi = {10.1051/ro/2019009}, mrnumber = {4074002}, zbl = {1443.90246}, language = {en}, url = {http://archive.numdam.org/articles/10.1051/ro/2019009/} }
TY - JOUR AU - Kaffash, Sepideh AU - Aktas, Emel AU - Tajik, Mohammad TI - The impact of oil price changes on efficiency of banks: An application in the Middle East oil exporting countries using SORM-DEA JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2020 SP - 719 EP - 748 VL - 54 IS - 3 PB - EDP-Sciences UR - http://archive.numdam.org/articles/10.1051/ro/2019009/ DO - 10.1051/ro/2019009 LA - en ID - RO_2020__54_3_719_0 ER -
%0 Journal Article %A Kaffash, Sepideh %A Aktas, Emel %A Tajik, Mohammad %T The impact of oil price changes on efficiency of banks: An application in the Middle East oil exporting countries using SORM-DEA %J RAIRO - Operations Research - Recherche Opérationnelle %D 2020 %P 719-748 %V 54 %N 3 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/ro/2019009/ %R 10.1051/ro/2019009 %G en %F RO_2020__54_3_719_0
Kaffash, Sepideh; Aktas, Emel; Tajik, Mohammad. The impact of oil price changes on efficiency of banks: An application in the Middle East oil exporting countries using SORM-DEA. RAIRO - Operations Research - Recherche Opérationnelle, Tome 54 (2020) no. 3, pp. 719-748. doi : 10.1051/ro/2019009. http://archive.numdam.org/articles/10.1051/ro/2019009/
[1] Formulation and estimation of stochastic frontier production function models. J. Econom. 6 (1977) 21–37. | DOI | MR | Zbl
, and ,[2] Profit efficiency sources and differences among small and large US commercial banks. J. Econ. Finance 29 (2005) 289–299. | DOI
and ,[3] The profit efficiency of small US commercial banks. J. Bank. Finance 27 (2003) 307–325. | DOI
and ,[4] Does the form of ownership affect firm performance? Evidence from US bank profit efficiency before and during the financial crisis. Q. Rev. Econ. Finance 64 (2017) 120–129. | DOI
, and ,[5] Managerial and technical inefficiencies of foreign and domestic banks in Turkey during the 2008 global crisis. Emerg. Markets Finance Trade 492013 (2008) 48–63.
, and ,[6] The causes of productivity change in GCC banking industry. Int. J. Prod. Perform. Manage. 56 (2007) 731–743. | DOI
,[7] Efficiency in European banking. Eur. Econ. Rev. 45 (2001) 1931–1955. | DOI
, , and ,[8] Mergers and acquisitions and bank performance in Europe: the role of strategic similarities. J. Econ. Bus. 60 (2008) 204–222. | DOI
and ,[9] Efficiency and risk in Japanese banking. J. Bank. Finance 24 (2000) 1605–1628. | DOI
, , and ,[10] Flexible measures in production process: a DEA-based approach. RAIRO: OR 45 (2011) 63–74. | DOI | Numdam | MR | Zbl
and ,[11] Islamic Finance. Innovation and Growth. Euromoney and AAOIFI, London (2002).
and ,[12] Cost and profit efficiency of Chinese banks: a non-parametric analysis. Chin. Econ. Rev. 19 (2008) 260–273. | DOI
and ,[13] Financial liberalization and bank efficiency: a comparative analysis of India and Pakistan. Appl. Econ. 36 (2004) 1915–1924. | DOI
*, and ,[14] Economic reforms and bank efficiency in developing countries: the case of the Indian banking industry. Appl. Financ. Econ. 16 (2006) 653–663. | DOI
and ,[15] The evidence on efficiency gains: the role of mergers and the benefits to the public. J. Bank. Finance 23 (1999) 991–1013. | DOI
,[16] Cost, revenue and profit efficiency of Islamic vs. conventional banks: international evidence using data envelopment analysis. Islam. Econ. Stud. 15 (2008) 23–76.
, , and ,[17] Differential impact of Korean banking system reforms on bank productivity. J. Bank. Finance 34 (2010) 1450–1460. | DOI
, and ,[18] Risk and regulation: a difference-in-differences analysis for Italian local banks. Finance Res. Lett. 17 (2016) 25–32. | DOI
, and ,[19] Does IT investment improve bank performance? Evidence from Europe. J. Bank. Finance 31 (2007) 2205–2230. | DOI
,[20] Efficiency and stock performance in European banking. J. Bus. Finance Acc. 33 (2006) 245–262. | DOI
, and ,[21] Regional bank efficiency and its effect on regional growth in “normal” and “bad” times. Econ. Model. 58 (2016) 413–426. | DOI
, and ,[22] The efficiency cost of market power in the banking industry: a test of the “quiet life” and related hypotheses. Rev. Econ. Stat. 80 (1998) 454–465. | DOI
and ,[23] The impact of oil price shocks on the economic growth of selected MENA1 countries. Energy J. 31 (2010) 149–176. | DOI
, and ,[24] Analysis of oil export dependency of MENA countries: drivers, trends and prospects. Energy Policy 38 (2010) 1098–1107. | DOI
and ,[25] Bank performance, efficiency and ownership in transition countries. J. Bank. Finance 29 (2005) 31–53. | DOI
, and ,[26] Privatization matters: bank efficiency in transition countries. J. Bank. Finance 29 (2005) 2155–2178. | DOI
, and ,[27] Concentration and other determinants of bank profitability in Europe, North America and Australia. J. Bank. Finance 13 (1989) 65–79. | DOI
,[28] The Lagrange multiplier test and its applications to model specification in econometrics. Rev. Econ. Stud. 47 (1980) 239–253. | DOI | MR | Zbl
and ,[29] The Middle East and North Africa in a changing oil market. Washington: IMF (2003).
and ,[30] A note on banking efficiency in Portugal, new vs. old banks. J. Bank. Finance 27 (2003) 2087–2098. | DOI
and ,[31] Testing the relationship between competition and efficiency in banking: a panel data analysis. Econ. Lett. 105 (2009) 134–137. | DOI
and ,[32] A comparative study of efficiency in European banking. Appl. Econ. 35 (2003) 1865–1876. | DOI
and ,[33] Efficiency and risk in commercial banking: empirical evidence from East Asian countries. Eur. J. Finance 20 (2014) 1114–1132. | DOI
, , and ,[34] Foundations of data envelopment analysis for Pareto-Koopmans efficient empirical production functions. J. Econom. 30 (1985) 91–107. | DOI | MR | Zbl
, , , and ,[35] Measuring the efficiency of decision making units. Eur. J. Oper. Res. 2 (1978) 429–444. | DOI | MR | Zbl
, and ,[36] Oil prices and real exchange rates. Energy Econ. 29 (2007) 390–404. | DOI
and ,[37] A measurement of bank efficiency, ownership and productivity changes in Taiwan. Serv. Ind. J. 20 (2000) 95–109. | DOI
and ,[38] The analysis of Taiwanese bank efficiency: incorporating both external environment risk and internal risk. Econ. Model. 26 (2009) 456–463. | DOI
and ,[39] Financial deepening and bank productivity in Latin America. Eur. J. Finance 17 (2011) 811–827. | DOI
, and ,[40] Financial freedom and bank efficiency: evidence from the European Union. J. Bank. Finance 37 (2013) 1223–1231. | DOI
, and ,[41] Bank supervision, regulation, and efficiency: evidence from the European Union. J. Financ. Stab. 8 (2012) 292–302. | DOI
, and ,[42] An Introduction to Efficiency and Productivity Analysis. Springer Science & Business Media, New York (2005).
, , and ,[43] Oil prices, inflation and interest rates in a structural cointegrated VAR model for the G-7 countries. Energy Econ. 30 (2008) 856–888. | DOI
and ,[44] Oil prices, economic activity and inflation: evidence for some Asian countries. Q. Rev. Econ. Finance 45 (2005) 65–83. | DOI
and ,[45] Do oil price shocks matter? Evidence for some European countries. Energy Econ. 25 (2003) 137–154. | DOI
and ,[46] Financial liberalization and banking efficiency: evidence from Turkey. J. Prod. Anal. 27 (2007) 177–195. | DOI
, and ,[47] The impact of macroeconomic and regulatory factors on bank efficiency: a non-parametric analysis of Hong Kong’s banking system. J. Bank. Finance 30 (2006) 1443–1466. | DOI
, and ,[48] Evaluating the productive efficiency of Islamic banking in GCC: a non-parametric approach. Int. Manage. Rev. 7 (2011) 10.
and ,[49] Data envelopment analysis with classification and regression tree – a case of banking efficiency. Expert Syst. 27 (2010) 231–246. | DOI
and ,[50] A semi-oriented radial measure for measuring the efficiency of decision making units with negative data, using DEA. Eur. J. Oper. Res. 200 (2010) 297–304. | DOI | Zbl
, and ,[51] A survey and analysis of the first 40 years of scholarly literature in DEA: 1978–2016. Socio-econ. Plan. Sci. 61 (2018) 4–8. | DOI
and ,[52] Short-term interest rates as predictors of inflation. Am. Econ. Rev. 65 (1975) 269–282.
,[53] The measurement of productive efficiency. J. R. Stat. Soc. Ser. A (Gen.) 120 (1957) 253–290. | DOI
,[54] Oil price volatility and the macroeconomy. J. Macroecon. 18 (1997) 1–26. | DOI
,[55] Assessing bank efficiency and performance with operational research and artificial intelligence techniques: a survey. Eur. J. Oper. Res. 204 (2010) 189–198. | DOI | Zbl
and ,[56] Accounting for environmental effects and statistical noise in data envelopment analysis. J. Prod. Anal. 17 (2002) 157–174. | DOI
, , and ,[57] Analysing the determinants of bank efficiency: the case of Italian banks. Appl. Econ. 36 (2004) 215–227. | DOI
, and ,[58] Crude oil and the macroeconomy: tests of some popular notions: note. J. Money Credit Bank. 18 (1986) 95–103. | DOI
and ,[59] Determinants of commercial bank performance in transition: an application of data envelopment analysis. Comp. Econ. Stud. 48 (2006) 497–522. | DOI
and ,[60] Oil price volatility and US macroeconomic activity. Review 87 (2005) 669–684.
and ,[61] Productivity and efficiency change and shareholder value: evidence from the Spanish banking sector. Appl. Econ. 40 (2008) 2037–2044. | DOI
and ,[62] A new approach to dealing with negative numbers in efficiency analysis: an application to the Indonesian banking sector. Expert Syst. Appl. 39 (2012) 8212–8219. | DOI
, , , and ,[63] What is an oil shock?. J. Econom. 113 (2003) 363–398. | DOI | MR | Zbl
,[64] This is what happened to the oil price-macroeconomy relationship. J. Monet. Econ. 38 (1996) 215–220. | DOI
,[65] Are the macroeconomic effects of oil-price changes symmetric? A comment. In: Carnegie-Rochester Conference Series on Public Policy. North-Holland (1988) 369–378. | DOI
,[66] Oil and the macroeconomy since World War II. J. Polit. Econ. 91 (1983) 228–248. | DOI
,[67] Deregulation and efficiency: the case of private Korean banks. J. Econ. Bus. 53 (2001) 237–254. | DOI
, and ,[68] Development and efficiency of the banking sector in a transitional economy: Hungarian experience. J. Bank. Finance 27 (2003) 2249–2271. | DOI
and ,[69] Explaining efficiency differences among large German and Austrian banks. Appl. Econ. 37 (2005) 969–980. | DOI
,[70] Specification tests in econometrics. Econometrica 46 (1978) 1251–1271. | DOI | MR | Zbl
,[71] Efficiency of the Polish banking industry: Foreign vs. domestic banks. J. Bank. Finance 30 (2006) 1975–1996. | DOI
,[72] The impact of financial liberalization on bank efficiency: evidence from Latin America and Asia. Appl. Econ. 42 (2010) 3351–3365. | DOI
and ,[73] Federal Reserve Board, FEDS Working Paper No. 99-43. Federal Reserve Board, Washington, DC (1999).
,[74] What happened to the oil price-macroeconomy relationship?. J. Monet. Econ. 38 (1996) 195–213. | DOI
,[75] Market structure, risk taking, and the efficiency of Chinese commercial banks. Emerg. Markets Rev. 20 (2014) 75–88. | DOI
, and ,[76] Total-factor energy efficiency of regions in China. Energy Policy 34 (2006) 3206–3217. | DOI
and ,[77] Crude oil prices and US economic performance: where does the asymmetry reside?. Energy J. 19 (1998) 107–132. | DOI
,[78] Productivity, technology and efficiency of de novo banks: a counter evidence from Turkey. J. Multinatl. Financ. Manage. 18 (2008) 427–442. | DOI
,[79] Financial disruption and bank productivity: the 1994 experience of Turkish banks. Q. Rev. Econ. Finance 43 (2003) 291–320. | DOI
and ,[80] Financial deregulation and total factor productivity change: an empirical study of Turkish commercial banks. J. Bank. Finance 27 (2003) 1455–1485. | DOI
and ,[81] The effects of governance changes on bank efficiency in China: a stochastic distance function approach. Chin. Econ. Rev. 20 (2009) 717–731. | DOI
, and ,[82] Bank ownership, privatization, and performance: evidence from a transition country. J. Banking Finan. 37 (2013) 3364–3372. | DOI
, and ,[83] Oil price shocks and real GDP growth: empirical evidence for some OECD countries. Appl. Econ. 37 (2005) 201–228. | DOI
. ,[84] A comparison of performance of Islamic and conventional banks 2004–2009. J. Econ. Behav. Organ. 103 (2014) S93–S107. | DOI
, and ,[85] The efficiency of Islamic and conventional banks in the Gulf Cooperation Council (GCC) countries: an analysis using financial ratios and data envelopment analysis. Lancaster University Management School Working Paper (2009) 23.
, and ,[86] Oil and the stock markets. J. Finance 51 (1996) 463–491. | DOI
and ,[87] Oil price and bank performance in the Middle Eastern oil exporting countries. Ph.D. thesis, Brunel University (2014).
,[88] Data envelopment analysis in financial services: a citations network analysis of banks, insurance companies and money market funds. Ann. Oper. Res. 253 (2017) 307–344. | DOI | MR
and ,[89] Possible monetary policy responses to the Iraqi oil shock, Federal Reserve Bank Kansas City Econ. Rev. 2 (1990) 19–32.
and ,[90] Determinants of Inflation in GCC. Middle East Develop. J. 3 (2011) 141–158. | DOI
and ,[91] Multi-period efficiency measurement in data envelopment analysis: the case of Taiwanese commercial banks. Omega 47 (2014) 90–98. | DOI
and ,[92] The impact of monetary policy on bank balance sheets. In: Carnegie-Rochester Conference Series on Public Policy. Elsevier (1995) 151–195. | DOI
and ,[93] Impact of carbon dioxide emission control: interpretation of proposed scenarios, IPCC. Energy and Industry subgroup, Paris (1990).
,[94] Bank size, bank capital, and the bank lending channel. J. Money Credit Bank. 32 (2000) 121–141. | DOI
and ,[95] Trade linkages and macroeconomic effects of the price of oil. Energy Econ. 32 (2010) 848–856. | DOI
and ,[96] Measurement of bank performance in Greece. South-East. Eur. J. Econ. 1 (2008) 79–95.
and ,[97] Trajectories of efficiency measurement: a bibliometric analysis of DEA and SFA. Eur. J. Oper. Res. 240 (2015) 1–21. | DOI | Zbl
and ,[98] Evaluation of bank branch growth potential using data envelopment analysis. Omega 52 (2015) 33–41. | DOI
and ,[99] Oil shocks and the macroeconomy: the role of price variability. Energy J. 16 (1995) 39–56. | DOI
, and ,[100] Bank efficiency and foreign ownership: do good institutions matter?. J. Bank. Finance 32 (2008) 834–844. | DOI
, and ,[101] The impact of non-traditional activities on the estimation of bank efficiency: international evidence. J. Bank. Finance 34 (2010) 1436–1449. | DOI
and ,[102] An efficiency comparison of European banking systems operating under different environmental conditions. J. Prod. Anal. 18 (2002) 59–77. | DOI
, and ,[103] A modified semi-oriented radial measure for target setting with negative data. Measurement 54 (2014) 152–158. | DOI
, and ,[104] Risk management and managerial efficiency in Chinese banks: a network DEA framework. Omega 41 (2013) 207–215. | DOI
,[105] Cost and profit efficiency in European banks. J. Int. Financ. Markets Inst. Money 12 (2002) 33–58. | DOI
, , and ,[106] Using least squares and tobit in second stage DEA efficiency analyses. Eur. J. Oper. Res. 197 (2009) 792–798. | DOI | Zbl
,[107] Efficiency estimation from Cobb-Douglas production functions with composed error. Int. Econ. Rev. 18 (1977) 435–444. | DOI | Zbl
and ,[108] A study of bank efficiency taking into account risk-preferences. J. Bank. Finance 20 (1996) 1025–1045. | DOI
,[109] Efficiency in European banking. John Wiley & Sons, Chichester, UK (1996).
, and ,[110] Determinants of European bank profitability: a note. J. Bank. Finance 16 (1992) 1173–1178. | DOI
and ,[111] Oil and the macroeconomy when prices go up and down: an extension of Hamilton’s results. J. Polit. Econ. 97 (1989) 740–744. | DOI
,[112] Macroeconomic responses to oil price increases and decreases in seven OECD countries. Energy J. 15 (1994) 19–35. | DOI
, and ,[113] Productivity growth in large US commercial banks: the initial post-deregulation experience. J. Bank. Finance 25 (2001) 913–939. | DOI
, and ,[114] Using accounting ratios to distinguish between Islamic and conventional banks in the GCC region. Int. J. Acc. 43 (2008) 45–65. | DOI
and ,[115] The impact of the global financial crisis on the profitability of islamic and conventional banks in Asia and the Middle East. In: IX KIMEP International Research Conference (KIRC-2012) “Central Asia: Regionalization vs. Globalization” April 19–21 (2012) 25.
and ,[116] The impact of regulatory policies on risk taking and scale efficiency of commercial banks in an emerging banking sector. Emerg. Markets Finance Trade 49 (2013) 80–98. | DOI
, and ,[117] Oil price shocks, stock market, economic activity and employment in Greece. Energy Econ. 23 (2001) 511–532. | DOI
,[118] Two-stage evaluation of bank branch efficiency using data envelopment analysis. Omega 39 (2011) 99–109. | DOI
, and ,[119] Estimating the technical and scale efficiency of Greek commercial banks: the impact of credit risk, off-balance sheet activities, and international operations. Res. Int. Bus. Finance 22 (2008) 301–318. | DOI
,[120] The impact of foreign direct investment on total factor productivity growth: international evidence from the banking industry. Manage. Finance 35 297–311.
and ,[121] The impact of banking regulations on banks’ cost and profit efficiency: cross-country evidence. Int. Rev. Financ. Anal. 18 (2009) 294–302. | DOI
, and ,[122] Credit risk and efficiency in the European banking system: a three-stage analysis. Appl. Financ. Econ. 12 (2002) 895–911. | DOI
,[123] Oil prices and bank profitability: evidence from major oil-exporting countries in the Middle East and North Africa. IMF Working Papers, WP/09/220, available at: https://www.imf.org/external/pubs/ft/wp/2009/wp09220.pdf, last accessed: 03/2020 (2009) 1–23.
and ,[124] Negative data in DEA: a directional distance approach applied to bank branches. J. Oper. Res. Soc. 55 (2004) 1111–1121. | DOI | Zbl
, and ,[125] Malmquist-type indices in the presence of negative data: an application to bank branches.J. Bank. Finance 34 (2010) 1472–1483. | DOI
and ,[126] Efficiency and productivity effects of bank mergers: evidence from the Greek banking industry. Econ. Model. 25 (2008) 236–254. | DOI
,[127] The influence of oil prices on Islamic banking efficiency scores during the financial crisis: evidence from the MENA Area. J. Finance Bank. Stud. 4 (2015) 9.
,[128] Efficiency of banks in a developing economy: the case of India. Eur. J. Oper. Res. 148 (2003) 662–671. | DOI | MR | Zbl
,[129] Inputs, outputs, and a theory of production and cost at depository financial institutions. J. Finance 32 (1977) 1251–1266. | DOI
and ,[130] Efficiency of banks: recent evidence from the transition economies of Europe, 1993–2000. Eur. J. Finance 13 (2007) 123–143. | DOI
and ,[131] A modified slacks-based measure model for data envelopment analysis with “natural” negative outputs and inputs. J. Oper. Res. Soc. 58 (2007) 1672–1677. | DOI
, and ,[132] Estimation and inference in two-stage, semi-parametric models of production processes. J. Econom. 136 (2007) 31–64. | DOI | MR
and ,[133] Assessing profitability factors in the Greek banking system: a multicriteria methodology. Int. Trans. Oper. Res. 9 (2002) 517–530. | DOI | Zbl
, and ,[134] Cost and profit efficiency of conventional and Islamic banks in GCC countries. J. Prod. Anal. 34 (2010) 45–62. | DOI
,[135] Evolution of bank efficiency in Brazil: a DEA approach. Eur. J. Oper. Res. 202 (2010) 204–213. | DOI
, and ,[136] Fiscal policy challenges in oil exporting countries: a review of key issus. In: European Central Bank Occasional Paper Series (2009) 1041.
, and ,[137] Foreign bank entry, deregulation and bank efficiency: lessons from the Australian experience. J. Bank. Finance 28 (2004) 1775–1799. | DOI
and ,[138] Determinants of bank efficiency during unstable macroeconomic environment: empirical evidence from Malaysia. Res. Int. Bus. Finance 23 (2009) 54–77. | DOI
,[139] Opening the black box on bank efficiency in China: does economic freedom matter?. Glob. Econ. Rev. 40 (2011) 269–298. | DOI
and ,[140] A comprehensive analysis of the effects of risk measures on bank efficiency: evidence from emerging Asian countries. J. Bank. Finance 35 (2011) 1727–1735. | DOI
and ,[141] Are the macroeconomic effects of oil-price changes symmetric?. In: Carnegie-Rochester Conference Series on Public Policy. North-Holland (1988) 325–368. | DOI
,[142] Determinants of bank efficiency: the case of Brazil. Eur. J. Oper. Res. 207 (2010) 1587–1598. | DOI
and ,[143] Incorporating risk into bank efficiency: a satisficing DEA approach to assess the Greek banking crisis. Expert Syst. Appl. 42 (2015) 3491–3500. | DOI
and ,[144] The impact of crude oil price volatility on agricultural employment in the United States. Energy Environ. 7 (1996) 57–74. | DOI
,[145] Does bank capital matter for monetary transmission?. Econ. Policy Rev. 8 (2002) 259–265.
,[146] A comparison between stochastic DEA and fuzzy DEA approaches: revisiting efficiency in Angolan banks. RAIRO: OR 52 (2018) 285–303. | DOI | Numdam | MR | Zbl
, and ,[147] Measuring cost efficiency in European banking: acomparison of frontier techniques. J. Prod. Anal. 21 (2004) 133–152. | DOI
,[148] Social and financial efficiency of Islamic microfinance institutions: a data envelopment analysis application. Socio-econ. Plan. Sci. 50 (2015) 1–17. | DOI
and ,[149] Banking efficiency in China: application of DEA to pre-and post-deregulation eras: 1993–2000. Chin. Econ. Rev. 16 (2005) 229–245. | DOI
, and ,[150] Assessing the degree of financial integration in ASEAN—A perspective of banking competitiveness. Res. Int. Bus. Finance 47 (2019) 487–500. | DOI
and ,[151] Estimating the impact of contextual variables on the productivity: an enhanced slack-based DEA model. RAIRO: OR 51 (2017) 903–920. | DOI | Numdam | MR
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