%0 Journal Article %A Piotr Dowbor %T Non-orbicular modules for Galois coverings %J Colloquium Mathematicum %D 2001 %P 241-310 %V 89 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm89-2-9/ %R 10.4064/cm89-2-9 %G en %F 10_4064_cm89_2_9