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@article{DAN_1969_186_4_a3, author = {M. G. Gasymov}, title = {The distribution of eigenvalues of selfadjoint ordinary differential operators}, journal = {Doklady Akademii Nauk}, pages = {753--756}, publisher = {mathdoc}, volume = {186}, number = {4}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a3/} }
M. G. Gasymov. The distribution of eigenvalues of selfadjoint ordinary differential operators. Doklady Akademii Nauk, Tome 186 (1969) no. 4, pp. 753-756. http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a3/