@article{GDZPPN002418436, title = {Characters of Groups with Normal Extra Special Subgroups.}, journal = {Mathematische Zeitschrift}, volume = {147}, year = {1976}, pages = {1-32}, zbl = {0325.20005}, url = {http://dml.mathdoc.fr/item/GDZPPN002418436} }
Dade, Everett C. Characters of Groups with Normal Extra Special Subgroups.. Mathematische Zeitschrift, Tome 147 (1976) pp. 1-32. http://gdmltest.u-ga.fr/item/GDZPPN002418436/