%0 Journal Article %A Antoni Leon Dawidowicz %A Andrzej Turski %T A simple proof of a theorem on Markov operators %J Annales Polonici Mathematici %D 1988 %P 65-70 %V 48 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-48-1-65-70/ %R 10.4064/ap-48-1-65-70 %G en %F 10_4064_ap_48_1_65_70