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@article{IVM_1976_1_a9, author = {G. V. Rozenblum}, title = {Distribution of the discrete spectrum of singular differential operators}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {75--86}, publisher = {mathdoc}, number = {1}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1976_1_a9/} }
G. V. Rozenblum. Distribution of the discrete spectrum of singular differential operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1976), pp. 75-86. http://geodesic.mathdoc.fr/item/IVM_1976_1_a9/