@article{JRAM_1969__236_150932,
     author = {Robert B. Brown},
     title = {Groups of type {E7.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {79--102},
     year = {1969},
     volume = {236},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1969__236_150932/}
}