TY - JOUR AU - Schott, Dieter TI - Ball intersection model for Fejér zones of convex closed sets JO - Discussiones Mathematicae. Differential Inclusions, Control and Optimization PY - 2001 SP - 51 EP - 79 VL - 21 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DMDICO_2001_21_1_a1/ LA - en ID - DMDICO_2001_21_1_a1 ER -