A remark on the regularity at the boundary for solutions of elliptic equations
Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche, Série 3, Tome 15 (1961) no. 4, pp. 355-370. 
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     author = {Venkatesha Murthy, M. K.},
     title = {A remark on the regularity at the boundary for solutions of elliptic equations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {355--370},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 15},
     number = {4},
     year = {1961},
     mrnumber = {140832},
     zbl = {0111.09402},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1961_3_15_4_355_0/}
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Venkatesha Murthy, M. K. A remark on the regularity at the boundary for solutions of elliptic equations. Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche, Série 3, Tome 15 (1961) no. 4, pp. 355-370. http://archive.numdam.org/item/ASNSP_1961_3_15_4_355_0/

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