@article{MZ_1972__129_171818,
     author = {Morton Harris},
     title = {On {Normal} {Subgroups} of {p-Solvable} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {55--56},
     year = {1972},
     volume = {129},
     zbl = {0233.20008},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__129_171818/}
}