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@article{DE_1989_25_6_a17, author = {A. Yanushauskas}, title = {Some boundary value problems for elliptic equations whose order degenerates}, journal = {Differencialʹnye uravneni\^a}, pages = {1035--1042}, publisher = {mathdoc}, volume = {25}, number = {6}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1989_25_6_a17/} }
A. Yanushauskas. Some boundary value problems for elliptic equations whose order degenerates. Differencialʹnye uravneniâ, Tome 25 (1989) no. 6, pp. 1035-1042. http://geodesic.mathdoc.fr/item/DE_1989_25_6_a17/