@article{1250130557, author = {Gross, Fletcher}, title = {$p$-subgroups of core-free quasinormal subgroups II}, journal = {Rocky Mountain J. Math.}, volume = {5}, number = {4}, year = {1975}, pages = { 349-360}, language = {en}, url = {http://dml.mathdoc.fr/item/1250130557} }
Gross, Fletcher. $p$-subgroups of core-free quasinormal subgroups II. Rocky Mountain J. Math., Tome 5 (1975) no. 4, pp. 349-360. http://gdmltest.u-ga.fr/item/1250130557/