TY - JOUR AU - Ralph Demarr TI - Common fixed points for isotone mappings JO - Colloquium Mathematicum PY - 1964 SP - 45 EP - 48 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-13-1-45-48/ DO - 10.4064/cm-13-1-45-48 LA - en ID - 10_4064_cm_13_1_45_48 ER -