%0 Journal Article %A Jochen Reinermann %T On a fixed-point theorem of Banach type %J Annales Polonici Mathematici %D 1970 %P 105-107 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-23-2-105-107/ %R 10.4064/ap-23-2-105-107 %G en %F 10_4064_ap_23_2_105_107