@article{MAN_1989__283_1_164509,
     author = {Werner Meyer and Wolfram Neutsch},
     title = {A {Root} {System} for the {Lyons} {Group.}},
     journal = {Mathematische Annalen},
     pages = {285--300},
     publisher = {mathdoc},
     volume = {283},
     number = {1},
     year = {1989},
     zbl = {0642.20015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1989__283_1_164509/}
}