%0 Journal Article %A Marek, Ivo %T A remark on linear operators leaving a cone invariant in a Banach space %J Commentationes Mathematicae Universitatis Carolinae %D 1961 %P 10-16 %V 02 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1961__2_4_a2/ %G en %F CMUC_1961__2_4_a2