%0 Journal Article %A J. Dukarm %T Weakly monadic Boolean extension functors %J Fundamenta Mathematicae %D 1980 %P 75-90 %V 110 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-110-2-75-90/ %R 10.4064/fm-110-2-75-90 %G en %F 10_4064_fm_110_2_75_90