@article{FORUM_1994__6_3_141749,
     author = {Helmut V\"olklein},
     title = {Braid group action, embedding problems and the groups {PGLn(q),} {Pun(q2).}},
     journal = {Forum mathematicum},
     pages = {513--536},
     year = {1994},
     volume = {6},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1994__6_3_141749/}
}