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@article{AL_1970_9_5_a1, author = {I. S. Klein and A. V. Mikhalev}, title = {The unitary {Steinberg} group over a ring with involution}, journal = {Algebra i logika}, pages = {510--519}, publisher = {mathdoc}, volume = {9}, number = {5}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1970_9_5_a1/} }
I. S. Klein; A. V. Mikhalev. The unitary Steinberg group over a ring with involution. Algebra i logika, Tome 9 (1970) no. 5, pp. 510-519. http://geodesic.mathdoc.fr/item/AL_1970_9_5_a1/