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@article{DAN_1964_159_3_a2, author = {M. Sh. Birman}, title = {A local criterion for the existence of wave operators}, journal = {Doklady Akademii Nauk}, pages = {485--488}, publisher = {mathdoc}, volume = {159}, number = {3}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_3_a2/} }
M. Sh. Birman. A local criterion for the existence of wave operators. Doklady Akademii Nauk, Tome 159 (1964) no. 3, pp. 485-488. http://geodesic.mathdoc.fr/item/DAN_1964_159_3_a2/