%0 Journal Article %A N. Ya. Medvedev %T Certain questions of the theory of partially ordered groups %J Algebra i logika %D 1983 %P 435-442 %V 22 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1983_22_4_a5/ %G ru %F AL_1983_22_4_a5