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@article{DAN_1969_186_4_a0, author = {D. \`E. Allakhverdiev}, title = {Nonselfadjoint operators which depend rationally on the spectral parameter}, journal = {Doklady Akademii Nauk}, pages = {743--746}, publisher = {mathdoc}, volume = {186}, number = {4}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a0/} }
D. È. Allakhverdiev. Nonselfadjoint operators which depend rationally on the spectral parameter. Doklady Akademii Nauk, Tome 186 (1969) no. 4, pp. 743-746. http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a0/