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@article{IVM_1982_4_a13, author = {V. I. Yudovich}, title = {The spectrum of some bordered selfadjoint operators}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {77--81}, publisher = {mathdoc}, number = {4}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_4_a13/} }
V. I. Yudovich. The spectrum of some bordered selfadjoint operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1982), pp. 77-81. http://geodesic.mathdoc.fr/item/IVM_1982_4_a13/