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@article{DE_1982_18_7_a26, author = {A. Toraev}, title = {On the oscillatory behavior of solutions of equations of elliptic type}, journal = {Differencialʹnye uravneni\^a}, pages = {1277--1280}, publisher = {mathdoc}, volume = {18}, number = {7}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_7_a26/} }
A. Toraev. On the oscillatory behavior of solutions of equations of elliptic type. Differencialʹnye uravneniâ, Tome 18 (1982) no. 7, pp. 1277-1280. http://geodesic.mathdoc.fr/item/DE_1982_18_7_a26/