%0 Journal Article %A Beatriz Margolis %T Attractive operators and fixed points %J Annales Polonici Mathematici %D 1972 %P 279-285 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-26-3-279-285/ %R 10.4064/ap-26-3-279-285 %G en %F 10_4064_ap_26_3_279_285