%0 Journal Article %A Marxen, Donald %T Neighborhoods of the identity of the free abelian topological groups %J Mathematica slovaca %D 1976 %P 247-256 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1976__26_3_a9/ %G en %F MASLO_1976__26_3_a9