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@article{DE_1978_14_3_a10, author = {L. I. Vainerman}, title = {A second order degenerate elliptic equation in {Hilbert} space}, journal = {Differencialʹnye uravneni\^a}, pages = {482--491}, publisher = {mathdoc}, volume = {14}, number = {3}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1978_14_3_a10/} }
L. I. Vainerman. A second order degenerate elliptic equation in Hilbert space. Differencialʹnye uravneniâ, Tome 14 (1978) no. 3, pp. 482-491. http://geodesic.mathdoc.fr/item/DE_1978_14_3_a10/