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@article{DE_1970_6_4_a15, author = {S. N. Kruzhkov}, title = {Periodic solutions of nonlinear second order parabolic equations}, journal = {Differencialʹnye uravneni\^a}, pages = {731--740}, publisher = {mathdoc}, volume = {6}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1970_6_4_a15/} }
S. N. Kruzhkov. Periodic solutions of nonlinear second order parabolic equations. Differencialʹnye uravneniâ, Tome 6 (1970) no. 4, pp. 731-740. http://geodesic.mathdoc.fr/item/DE_1970_6_4_a15/