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@article{JRAM_1966__224_150767, author = {Karl Kronstein}, title = {Characters and systems of subgroups.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {147--163}, publisher = {mathdoc}, volume = {224}, year = {1966}, zbl = {0244.20008}, url = {http://geodesic.mathdoc.fr/item/JRAM_1966__224_150767/} }
Karl Kronstein. Characters and systems of subgroups.. Journal für die reine und angewandte Mathematik, Tome 224 (1966), pp. 147-163. http://geodesic.mathdoc.fr/item/JRAM_1966__224_150767/