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@article{DAN_1974_219_6_a11, author = {Kh. Kh. Murtazin}, title = {On the point spectrum of a class of differential operators}, journal = {Doklady Akademii Nauk}, pages = {1322--1324}, publisher = {mathdoc}, volume = {219}, number = {6}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1974_219_6_a11/} }
Kh. Kh. Murtazin. On the point spectrum of a class of differential operators. Doklady Akademii Nauk, Tome 219 (1974) no. 6, pp. 1322-1324. http://geodesic.mathdoc.fr/item/DAN_1974_219_6_a11/