@article{MZ_1974__136_172037,
     author = {Helmut Wielandt},
     title = {Normalteiler in 3-transitiven {Gruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {243--244},
     year = {1974},
     volume = {136},
     zbl = {0271.20002},
     url = {http://geodesic.mathdoc.fr/item/MZ_1974__136_172037/}
}