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@article{DAN_1958_119_1_a3, author = {G. I. Kats}, title = {Expansion in characteristic functions of self-adjoint operators}, journal = {Doklady Akademii Nauk}, pages = {19--22}, publisher = {mathdoc}, volume = {119}, number = {1}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_119_1_a3/} }
G. I. Kats. Expansion in characteristic functions of self-adjoint operators. Doklady Akademii Nauk, Tome 119 (1958) no. 1, pp. 19-22. http://geodesic.mathdoc.fr/item/DAN_1958_119_1_a3/