@article{MZ_1981__176_183639,
     author = {Richard E. Phillips and Brunella Bruno},
     title = {Groups with {Restricted} {Non-Normal} {Subgroups.}},
     journal = {Mathematische Zeitschrift},
     pages = {199--222},
     year = {1981},
     volume = {176},
     zbl = {0474.20014},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__176_183639/}
}