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@article{IVM_1972_3_a7, author = {S. Yu. Rotfeld}, title = {The spectral properties of the scattering matrix}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {52--60}, publisher = {mathdoc}, number = {3}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1972_3_a7/} }
S. Yu. Rotfeld. The spectral properties of the scattering matrix. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1972), pp. 52-60. http://geodesic.mathdoc.fr/item/IVM_1972_3_a7/