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@article{JRAM_1982__334_152448, author = {Wilhelm Plesken}, title = {Counting with groups and rings.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {40--68}, publisher = {mathdoc}, volume = {334}, year = {1982}, zbl = {0476.20041}, url = {http://geodesic.mathdoc.fr/item/JRAM_1982__334_152448/} }
Wilhelm Plesken. Counting with groups and rings.. Journal für die reine und angewandte Mathematik, Tome 334 (1982), pp. 40-68. http://geodesic.mathdoc.fr/item/JRAM_1982__334_152448/