TY - JOUR AU - Le Van Hot TI - On the extremal points of the closed unit balls in some abstract spaces JO - Acta Universitatis Carolinae. Mathematica et Physica PY - 1981 SP - 15 EP - 22 VL - 22 IS - 2 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/AUCMP_1981__22_2_a3/ LA - en ID - AUCMP_1981__22_2_a3 ER -