%0 Journal Article %A J. Jayne %A I. Namioka %A C. Rogers %T Fragmentability and σ-fragmentability %J Fundamenta Mathematicae %D 1993 %P 207-220 %V 143 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-143-3-207-220/ %R 10.4064/fm-143-3-207-220 %G en %F 10_4064_fm_143_3_207_220