@article{MZ_1976__152_172454,
     author = {Everett C. Dade},
     title = {Characters of {Groups} with {Normal} {Extra} {Special} {Subgroups.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--32},
     publisher = {mathdoc},
     volume = {152},
     year = {1976},
     zbl = {0325.20005},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__152_172454/}
}