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@article{DAN_1964_157_6_a7, author = {O. A. Oleinik}, title = {On a problem of {G.~Fichera}}, journal = {Doklady Akademii Nauk}, pages = {1297--1300}, publisher = {mathdoc}, volume = {157}, number = {6}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_6_a7/} }
O. A. Oleinik. On a problem of G.~Fichera. Doklady Akademii Nauk, Tome 157 (1964) no. 6, pp. 1297-1300. http://geodesic.mathdoc.fr/item/DAN_1964_157_6_a7/