@article{GDZPPN002213109,
title = {The defect groups of a clique, p-solvable groups, and Alperin's conjecture.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {468},
year = {1995},
pages = {1-48},
zbl = {0834.20008},
url = {http://dml.mathdoc.fr/item/GDZPPN002213109}
}
Ellers, Harald. The defect groups of a clique, p-solvable groups, and Alperin's conjecture.. Journal für die reine und angewandte Mathematik, Tome 468 (1995) pp. 1-48. http://gdmltest.u-ga.fr/item/GDZPPN002213109/