TY - JOUR AU - Z. Lipecki TI - Extensions of positive operators and extreme points. III JO - Colloquium Mathematicum PY - 1982 SP - 263 EP - 268 VL - 46 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-46-2-263-268/ DO - 10.4064/cm-46-2-263-268 LA - en ID - 10_4064_cm_46_2_263_268 ER -