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@article{DE_1977_13_1_a3, author = {M. G. Gasymov}, title = {A certain new spectral problem}, journal = {Differencialʹnye uravneni\^a}, pages = {23--28}, publisher = {mathdoc}, volume = {13}, number = {1}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1977_13_1_a3/} }
M. G. Gasymov. A certain new spectral problem. Differencialʹnye uravneniâ, Tome 13 (1977) no. 1, pp. 23-28. http://geodesic.mathdoc.fr/item/DE_1977_13_1_a3/