%0 Journal Article %A Z. Romanowicz %T Geometric structure of positive bases in linear spaces %J Applicationes Mathematicae %D 1987 %P 557-567 %V 19 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-19-3-4-557-567/ %R 10.4064/am-19-3-4-557-567 %G en %F 10_4064_am_19_3_4_557_567