@article{GDZPPN002111292,
title = {On perfect isometries and isotypies in finite groups.},
journal = {Inventiones mathematicae},
volume = {114},
year = {1993},
pages = {139-192},
zbl = {0811.20009},
url = {http://dml.mathdoc.fr/item/GDZPPN002111292}
}
Fong, Paul; Harris, Morton E. On perfect isometries and isotypies in finite groups.. Inventiones mathematicae, Tome 114 (1993) pp. 139-192. http://gdmltest.u-ga.fr/item/GDZPPN002111292/