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@article{DAN_1989_305_4_a15, author = {B. V. Fedosov}, title = {The index theorem in the algebra of quantum observables}, journal = {Doklady Akademii Nauk}, pages = {835--838}, publisher = {mathdoc}, volume = {305}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_305_4_a15/} }
B. V. Fedosov. The index theorem in the algebra of quantum observables. Doklady Akademii Nauk, Tome 305 (1989) no. 4, pp. 835-838. http://geodesic.mathdoc.fr/item/DAN_1989_305_4_a15/