TY - JOUR AU - S. G. Ovsepyan TI - On the sequential closure of a topological space in its Hausdorff extensions JO - Doklady Akademii Nauk PY - 1976 SP - 806 EP - 809 VL - 231 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1976_231_4_a8/ LA - ru ID - DAN_1976_231_4_a8 ER -