@article{GDZPPN002207370,
title = {The Alperin-McKay conjecture holds in the covering groups of symmetric and alternating groups, p ... 2.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {405},
year = {1990},
pages = {78-111},
zbl = {0684.20011},
url = {http://dml.mathdoc.fr/item/GDZPPN002207370}
}
Michler, G.O.; Olsson, J.B. The Alperin-McKay conjecture holds in the covering groups of symmetric and alternating groups, p ... 2.. Journal für die reine und angewandte Mathematik, Tome 405 (1990) pp. 78-111. http://gdmltest.u-ga.fr/item/GDZPPN002207370/