@article{MZ_1982__181_173230,
     author = {Michael Aschbacher},
     title = {The {Tits} {Group} as a {Standard} {Subgroup.}},
     journal = {Mathematische Zeitschrift},
     pages = {229--252},
     publisher = {mathdoc},
     volume = {181},
     year = {1982},
     zbl = {0498.20014},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__181_173230/}
}