TY - JOUR AU - Tkachuk, V. V. TI - Approximation of ${\bf R}^X$ with countable subsets of $C_p(X)$ and calibers of the space $C_p (X)$ JO - Commentationes Mathematicae Universitatis Carolinae PY - 1986 SP - 267 EP - 276 VL - 27 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1986__27_2_a5/ LA - en ID - CMUC_1986__27_2_a5 ER -