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@article{DAN_1983_269_5_a6, author = {B. L. Feigin and D. B. Fuchs}, title = {Casimir operators in modules over the {Virasoro} algebra}, journal = {Doklady Akademii Nauk}, pages = {1057--1060}, publisher = {mathdoc}, volume = {269}, number = {5}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1983_269_5_a6/} }
B. L. Feigin; D. B. Fuchs. Casimir operators in modules over the Virasoro algebra. Doklady Akademii Nauk, Tome 269 (1983) no. 5, pp. 1057-1060. http://geodesic.mathdoc.fr/item/DAN_1983_269_5_a6/