TY - JOUR AU - M. G. Tkachenko TI - Some conditions that imply compactness in countably-compact spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1981 SP - 256 EP - 257 VL - 36 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1981_36_1_a21/ LA - en ID - RM_1981_36_1_a21 ER -