@article{JOLT_1998_8_2_a2,
     author = {M. Burger and A. Valette},
     title = { Idempotents in {Complex} {Group} {Rings:} {Theorems} of {Zalesskii} and {Bass} {Revisited}},
     journal = {Journal of Lie Theory},
     pages = {219--228},
     year = {1998},
     volume = {8},
     number = {2},
     zbl = {0911.16018},
     url = {http://geodesic.mathdoc.fr/item/JOLT_1998_8_2_a2/}
}