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@article{DE_1988_24_1_a1, author = {K. B. Baikuziev}, title = {Spectral problems}, journal = {Differencialʹnye uravneni\^a}, pages = {9--16}, publisher = {mathdoc}, volume = {24}, number = {1}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1988_24_1_a1/} }
K. B. Baikuziev. Spectral problems. Differencialʹnye uravneniâ, Tome 24 (1988) no. 1, pp. 9-16. http://geodesic.mathdoc.fr/item/DE_1988_24_1_a1/