%0 Journal Article %A Lluis Puig %A Burkhard Külshammer %T Extensions of nilpotent blocks. %J Inventiones mathematicae %D 1990 %P 17 %V 102 %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/IM_1990__102_2_143826/ %G un %F IM_1990__102_2_143826