%0 Journal Article %A R. Mauldin %T On rectangles and countably generated families %J Fundamenta Mathematicae %D 1977 %P 129-139 %V 95 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-95-2-129-139/ %R 10.4064/fm-95-2-129-139 %G en %F 10_4064_fm_95_2_129_139