%0 Journal Article %A Sam B. Nadler, Jr. %T Some problems concerning stability of fixed points %J Colloquium Mathematicum %D 1973 %P 263-268 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-27-2-263-268/ %R 10.4064/cm-27-2-263-268 %G en %F 10_4064_cm_27_2_263_268