TY - JOUR AU - Holmes, R.D. TI - On Fixed and Periodic Points Under Certain Sets of Mappings JO - Canadian mathematical bulletin PY - 1969 SP - 813 EP - 822 VL - 12 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-106-1/ DO - 10.4153/CMB-1969-106-1 ID - 10_4153_CMB_1969_106_1 ER -