TY - JOUR AU - L. Ward TI - Characterization of the fixed point property for a class of set-valued mappings JO - Fundamenta Mathematicae PY - 1961 SP - 159 EP - 164 VL - 50 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-50-2-159-164/ DO - 10.4064/fm-50-2-159-164 LA - en ID - 10_4064_fm_50_2_159_164 ER -