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@article{DE_1990_26_4_a11, author = {O. D. Dyachkin}, title = {Some parabolic and elliptic equations in a {Hilbert} space}, journal = {Differencialʹnye uravneni\^a}, pages = {640--652}, publisher = {mathdoc}, volume = {26}, number = {4}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_4_a11/} }
O. D. Dyachkin. Some parabolic and elliptic equations in a Hilbert space. Differencialʹnye uravneniâ, Tome 26 (1990) no. 4, pp. 640-652. http://geodesic.mathdoc.fr/item/DE_1990_26_4_a11/