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@article{JRAM_1990__404_153203, author = {Burkhard K\"ulshammer}, title = {Landau's theorem for p-blocks of p-solvable groups.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {189--191}, publisher = {mathdoc}, volume = {404}, year = {1990}, zbl = {0684.20007}, url = {http://geodesic.mathdoc.fr/item/JRAM_1990__404_153203/} }
Burkhard Külshammer. Landau's theorem for p-blocks of p-solvable groups.. Journal für die reine und angewandte Mathematik, Tome 404 (1990), pp. 189-191. http://geodesic.mathdoc.fr/item/JRAM_1990__404_153203/