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@article{DAN_1979_247_5_a5, author = {A. Pietsch}, title = {$s${-Numbers} and eigenvalues of operators in {Banach} spaces}, journal = {Doklady Akademii Nauk}, pages = {1053--1056}, publisher = {mathdoc}, volume = {247}, number = {5}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_5_a5/} }
A. Pietsch. $s$-Numbers and eigenvalues of operators in Banach spaces. Doklady Akademii Nauk, Tome 247 (1979) no. 5, pp. 1053-1056. http://geodesic.mathdoc.fr/item/DAN_1979_247_5_a5/