@article{RO_2018__52_2_335_0,
     author = {Ahranjani, Leila Zeinalzadeh and Matin, Reza Kazemi and Saen, Reza Farzipoor},
     title = {Economies of scope in two-stage production systems: {A} data envelopment analysis approach},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {335--349},
     publisher = {EDP-Sciences},
     volume = {52},
     number = {2},
     year = {2018},
     doi = {10.1051/ro/2017023},
     zbl = {1398.90044},
     mrnumber = {3817468},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ro/2017023/}
}