%0 Journal Article %A Šípoš, Ján %T On extension of group valued measures %J Mathematica slovaca %D 1990 %P 279-286 %V 40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1990__40_3_a6/ %G en %F MASLO_1990__40_3_a6