TY - JOUR AU - Wolfgang W. Breckner TI - Characterizations of ultrabarrelledness and barrelledness involving the singularities of families of convex mappings. JO - Manuscripta mathematica PY - 1996 SP - 17 EP - 34 VL - 91 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MM2_1996__91_3_156212/ ID - MM2_1996__91_3_156212 ER -