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@article{DAN_1967_174_2_a7, author = {A. M. Perelomov and V. S. Popov}, title = {Casimir operators for the classical groups}, journal = {Doklady Akademii Nauk}, pages = {287--290}, publisher = {mathdoc}, volume = {174}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a7/} }
A. M. Perelomov; V. S. Popov. Casimir operators for the classical groups. Doklady Akademii Nauk, Tome 174 (1967) no. 2, pp. 287-290. http://geodesic.mathdoc.fr/item/DAN_1967_174_2_a7/