TY - JOUR AU - Higuchi, Sachio AU - Tanaka, Hidenori TI - Covering properties in countable products, II JO - Commentationes Mathematicae Universitatis Carolinae PY - 2006 SP - 491 EP - 502 VL - 47 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_2006__47_3_a11/ LA - en ID - CMUC_2006__47_3_a11 ER -