%0 Journal Article %A Just Winfried %A Marion Sheepers %A Juris Steprans %A Paul Szeptycki %T Gδ -sets in topological spaces and games %J Fundamenta Mathematicae %D 1997 %P 41-58 %V 153 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-153-1-41-58/ %R 10.4064/fm-153-1-41-58 %G en %F 10_4064_fm_153_1_41_58