@article{IM_1991__105_3_143925,
     author = {Michael Aschbacher and Yoav Segev},
     title = {The uniqueness of groups of type {J4.}},
     journal = {Inventiones mathematicae},
     pages = {589--608},
     publisher = {mathdoc},
     volume = {105},
     number = {3},
     year = {1991},
     zbl = {0735.20006},
     url = {http://geodesic.mathdoc.fr/item/IM_1991__105_3_143925/}
}