%0 Journal Article %T Viktor~Sil'vestrovich Charin (on his 50th birthday) %J Matematičeskie zametki %D 1970 %P 5-6 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1970_7_1_a0/ %G ru %F MZM_1970_7_1_a0