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@article{DAN_1962_144_2_a4, author = {M. G. Krein}, title = {On perturbation determinants and a trace formula for unitary and self-adjoint operators}, journal = {Doklady Akademii Nauk}, pages = {268--271}, publisher = {mathdoc}, volume = {144}, number = {2}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_2_a4/} }
M. G. Krein. On perturbation determinants and a trace formula for unitary and self-adjoint operators. Doklady Akademii Nauk, Tome 144 (1962) no. 2, pp. 268-271. http://geodesic.mathdoc.fr/item/DAN_1962_144_2_a4/