%0 Journal Article %A Wong, James S.W. %T On common fixed and periodic points %J Portugaliae mathematica %D 1967 %P 159-163 %V 26 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1967__26_2_115013/ %G en %F PORMA_1967__26_2_115013