%0 Journal Article %A Zoran Kadelburg %A Stojan Radenović %T On Ultrapowers of Linear Topological Spaces without Convexity Conditions %J Publications de l'Institut Mathématique %D 1990 %P 71 %V _N_S_47 %N 61 %I mathdoc %U http://geodesic.mathdoc.fr/item/PIM_1990_N_S_47_61_a9/ %G en %F PIM_1990_N_S_47_61_a9