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@article{DAN_1960_130_2_a2, author = {M. G. Krein}, title = {A contribution to the theory of linear non-selfadjoined operators}, journal = {Doklady Akademii Nauk}, pages = {254--256}, publisher = {mathdoc}, volume = {130}, number = {2}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_130_2_a2/} }
M. G. Krein. A contribution to the theory of linear non-selfadjoined operators. Doklady Akademii Nauk, Tome 130 (1960) no. 2, pp. 254-256. http://geodesic.mathdoc.fr/item/DAN_1960_130_2_a2/