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@article{DAN_1961_141_4_a10, author = {B. S. Pavlov}, title = {On the non-selfadjoint operator $-y''+q(x)y$ on a semiaxis}, journal = {Doklady Akademii Nauk}, pages = {807--810}, publisher = {mathdoc}, volume = {141}, number = {4}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_4_a10/} }
B. S. Pavlov. On the non-selfadjoint operator $-y''+q(x)y$ on a semiaxis. Doklady Akademii Nauk, Tome 141 (1961) no. 4, pp. 807-810. http://geodesic.mathdoc.fr/item/DAN_1961_141_4_a10/