%0 Journal Article %A J. Novák %T On the classification of σ(B)-measurable functions defined on an abstract point set %J Fundamenta Mathematicae %D 1961 %P 413-418 %V 50 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-50-4-413-418/ %R 10.4064/fm-50-4-413-418 %G en %F 10_4064_fm_50_4_413_418