%0 Journal Article %A S. I. Adian %A F. Grunevald %A J. Mennicke %T On Prime Quaternions, Hurwitz Relations, and a~New Operation of Group Extension %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2003 %P 7-22 %V 242 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2003_242_a1/ %G ru %F TM_2003_242_a1