@article{GDZPPN002064901, title = {Lifting idempotents and Clifford theory.}, journal = {Commentarii mathematici Helvetici}, volume = {58}, year = {1983}, pages = {86-95}, zbl = {0518.20005}, url = {http://dml.mathdoc.fr/item/GDZPPN002064901} }
Thévenaz, Jacques. Lifting idempotents and Clifford theory.. Commentarii mathematici Helvetici, Tome 58 (1983) pp. 86-95. http://gdmltest.u-ga.fr/item/GDZPPN002064901/