TY - JOUR AU - S. Mrówka TI - Axiomatic characterization of the family of all clusters in a proximity space JO - Fundamenta Mathematicae PY - 1959 SP - 123 EP - 126 VL - 48 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-48-2-123-126/ DO - 10.4064/fm-48-2-123-126 LA - en ID - 10_4064_fm_48_2_123_126 ER -