%0 Journal Article %A V. E. Voskresenskii %T Problems in $R$-equivalence of semisimple groups %J Zapiski Nauchnykh Seminarov POMI %D 1979 %P 49-65 %V 86 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1979_86_a6/ %G ru %F ZNSL_1979_86_a6