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@article{MZM_1982_31_1_a7, author = {V. V. Ditkin}, title = {Certain spectral properties of a pencil of linear bounded operators}, journal = {Matemati\v{c}eskie zametki}, pages = {75--79}, publisher = {mathdoc}, volume = {31}, number = {1}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1982_31_1_a7/} }
V. V. Ditkin. Certain spectral properties of a pencil of linear bounded operators. Matematičeskie zametki, Tome 31 (1982) no. 1, pp. 75-79. http://geodesic.mathdoc.fr/item/MZM_1982_31_1_a7/