%0 Journal Article %A V. M. Petechuk %T Isomorphisms of symplectic groups over commutative rings %J Algebra i logika %D 1983 %P 551-562 %V 22 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1983_22_5_a6/ %G ru %F AL_1983_22_5_a6