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@article{IM_1993__114_1_144144, author = {Paul Fong and Morton E. Harris}, title = {On perfect isometries and isotypies in finite groups.}, journal = {Inventiones mathematicae}, pages = {139--192}, publisher = {mathdoc}, volume = {114}, number = {1}, year = {1993}, zbl = {0811.20009}, url = {http://geodesic.mathdoc.fr/item/IM_1993__114_1_144144/} }
Paul Fong; Morton E. Harris. On perfect isometries and isotypies in finite groups.. Inventiones mathematicae, Tome 114 (1993) no. 1, pp. 139-192. http://geodesic.mathdoc.fr/item/IM_1993__114_1_144144/