%0 Journal Article %A Jasem, Milan %T Pairs of partially ordered groups with the same convex subgroups %J Mathematica slovaca %D 1987 %P 173-189 %V 37 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1987__37_2_a4/ %G en %F MASLO_1987__37_2_a4