%0 Journal Article %A Dariusz, M. Wilczynski %T On the topological classification of pseudofree group actions on 4-manifolds. I. %J Mathematische Zeitschrift %D 1994 %P 335-366 %V 217 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1994__217_1_174694/ %F MZ_1994__217_1_174694