TY - JOUR AU - Hsieh, Tsu-Teh AU - Tan, Kok-Keong TI - Periodic Points and Contractive Mappings JO - Canadian mathematical bulletin PY - 1974 SP - 209 EP - 211 VL - 17 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-042-3/ DO - 10.4153/CMB-1974-042-3 ID - 10_4153_CMB_1974_042_3 ER -