@article{IM_1984__78_143181,
     author = {J. Tits},
     title = {On {R.} {Griess'} },
     journal = {Inventiones mathematicae},
     pages = {491--499},
     publisher = {mathdoc},
     volume = {78},
     year = {1984},
     zbl = {0548.20011},
     url = {http://geodesic.mathdoc.fr/item/IM_1984__78_143181/}
}