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@article{DE_1979_15_1_a19, author = {A. I. Yanushauskas}, title = {Some systems of second-order partial differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {159--167}, publisher = {mathdoc}, volume = {15}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_1_a19/} }
A. I. Yanushauskas. Some systems of second-order partial differential equations. Differencialʹnye uravneniâ, Tome 15 (1979) no. 1, pp. 159-167. http://geodesic.mathdoc.fr/item/DE_1979_15_1_a19/