%0 Journal Article %A Hsieh, Tsu-Teh %A Tan, Kok-Keong %T Periodic Points and Contractive Mappings %J Canadian mathematical bulletin %D 1974 %P 209-211 %V 17 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-042-3/ %R 10.4153/CMB-1974-042-3 %F 10_4153_CMB_1974_042_3