%0 Journal Article %A B. Węglorz %T Boolean-valued selectors for families of sets %J Fundamenta Mathematicae %D 1974 %P 101-116 %V 86 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-86-2-101-116/ %R 10.4064/fm-86-2-101-116 %G en %F 10_4064_fm_86_2_101_116