%0 Journal Article %A Danchev, P. V. %T Direct decompositions and basic subgroups in commutative group rings %J Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica %D 2006 %P 53-56 %V 45 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUPO_2006__45_1_a4/ %G en %F AUPO_2006__45_1_a4