%0 Journal Article %A Richman, Fred %T Butler groups, valuated vector spaces, and duality %J Rendiconti del Seminario Matematico della Università di Padova %D 1984 %P 13-19 %V 72 %I Seminario Matematico of the University of Padua %U http://www.numdam.org/item/RSMUP_1984__72__13_0/ %G en %F RSMUP_1984__72__13_0