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@article{DAN_1965_163_3_a9, author = {O. A. Oleinik}, title = {On the smoothness of solutions of degenerating elliptic and parabolic equations}, journal = {Doklady Akademii Nauk}, pages = {577--580}, publisher = {mathdoc}, volume = {163}, number = {3}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_163_3_a9/} }
O. A. Oleinik. On the smoothness of solutions of degenerating elliptic and parabolic equations. Doklady Akademii Nauk, Tome 163 (1965) no. 3, pp. 577-580. http://geodesic.mathdoc.fr/item/DAN_1965_163_3_a9/