%0 Journal Article %A Ludomir Newelski %A Marcin Petrykowski %T Weak generic types and coverings of groups I %J Fundamenta Mathematicae %D 2006 %P 201-225 %V 191 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm191-3-2/ %R 10.4064/fm191-3-2 %G en %F 10_4064_fm191_3_2