@article{1256053301, author = {Isaacs, I. M.}, title = {Invariant and extendible group characters}, journal = {Illinois J. Math.}, volume = {14}, number = {4}, year = {1970}, pages = { 70-75}, language = {en}, url = {http://dml.mathdoc.fr/item/1256053301} }
Isaacs, I. M. Invariant and extendible group characters. Illinois J. Math., Tome 14 (1970) no. 4, pp. 70-75. http://gdmltest.u-ga.fr/item/1256053301/