TY - JOUR AU - Schirmer, Helga TI - Properties of the Fixed Point Set of Contractive Multi-Functions JO - Canadian mathematical bulletin PY - 1970 SP - 169 EP - 173 VL - 13 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-036-4/ DO - 10.4153/CMB-1970-036-4 ID - 10_4153_CMB_1970_036_4 ER -