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@article{CMH_1988__63_4_140128, author = {K. Knapp}, title = {Stably spherical classes in the {K-homology} of a finite group.}, journal = {Commentarii mathematici Helvetici}, pages = {414--449}, publisher = {mathdoc}, volume = {63}, number = {4}, year = {1988}, zbl = {0677.55003}, url = {http://geodesic.mathdoc.fr/item/CMH_1988__63_4_140128/} }
K. Knapp. Stably spherical classes in the K-homology of a finite group.. Commentarii mathematici Helvetici, Tome 63 (1988) no. 4, pp. 414-449. http://geodesic.mathdoc.fr/item/CMH_1988__63_4_140128/