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@article{IVM_1977_2_a8, author = {A. D. Krakhnov and V. R. Kogan}, title = {The canonical operator on a~closed trajectory}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {60--70}, publisher = {mathdoc}, number = {2}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1977_2_a8/} }
A. D. Krakhnov; V. R. Kogan. The canonical operator on a~closed trajectory. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1977), pp. 60-70. http://geodesic.mathdoc.fr/item/IVM_1977_2_a8/