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@article{DAN_1980_252_3_a6, author = {G. A. Margulis}, title = {On the multiplicative group of a quaternion algebra over a global field}, journal = {Doklady Akademii Nauk}, pages = {542--546}, publisher = {mathdoc}, volume = {252}, number = {3}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a6/} }
G. A. Margulis. On the multiplicative group of a quaternion algebra over a global field. Doklady Akademii Nauk, Tome 252 (1980) no. 3, pp. 542-546. http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a6/