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@article{DE_1991_27_10_a26, author = {P. L. Krupkin}, title = {On the spectrum of a pencil of compact operators}, journal = {Differencialʹnye uravneni\^a}, pages = {1829--1830}, publisher = {mathdoc}, volume = {27}, number = {10}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_10_a26/} }
P. L. Krupkin. On the spectrum of a pencil of compact operators. Differencialʹnye uravneniâ, Tome 27 (1991) no. 10, pp. 1829-1830. http://geodesic.mathdoc.fr/item/DE_1991_27_10_a26/