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@article{DAN_1979_248_2_a8, author = {I. M. Petrushko}, title = {On the first mixed problem for parabolic equations of second order}, journal = {Doklady Akademii Nauk}, pages = {294--298}, publisher = {mathdoc}, volume = {248}, number = {2}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_248_2_a8/} }
I. M. Petrushko. On the first mixed problem for parabolic equations of second order. Doklady Akademii Nauk, Tome 248 (1979) no. 2, pp. 294-298. http://geodesic.mathdoc.fr/item/DAN_1979_248_2_a8/