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@article{DE_1984_20_2_a3, author = {A. P. Vinnichenko}, title = {The spectrum of a nonselfadjoint singular differential operator}, journal = {Differencialʹnye uravneni\^a}, pages = {215--219}, publisher = {mathdoc}, volume = {20}, number = {2}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_2_a3/} }
A. P. Vinnichenko. The spectrum of a nonselfadjoint singular differential operator. Differencialʹnye uravneniâ, Tome 20 (1984) no. 2, pp. 215-219. http://geodesic.mathdoc.fr/item/DE_1984_20_2_a3/