TY - JOUR AU - Zofia Adamowicz TI - Continuous relations and generalized $G_δ$ sets JO - Fundamenta Mathematicae PY - 1984 SP - 91 EP - 107 VL - 123 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-123-2-91-107/ DO - 10.4064/fm-123-2-91-107 LA - en ID - 10_4064_fm_123_2_91_107 ER -