%0 Journal Article %A Drewnowski, Lech %T True preimages of compact or separable sets for functional analysts %J Commentationes Mathematicae Universitatis Carolinae %D 2020 %P 69-82 %V 61 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2020.007/ %R 10.14712/1213-7243.2020.007 %G en %F 10_14712_1213_7243_2020_007