TY - JOUR AU - Ivanova-Dimova, Elza TI - Vietoris-type topologies on hyperspaces JO - Serdica Mathematical Journal PY - 2018 SP - 103 EP - 120 VL - 44 IS - 1-2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SMJ2_2018_44_1-2_a4/ LA - en ID - SMJ2_2018_44_1-2_a4 ER -