@article{MZ_1976__147_172343,
     author = {Gustav I. Lehrer},
     title = {On {Incidence} {Structures} in {Finite} {Classical} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {287--300},
     year = {1976},
     volume = {147},
     zbl = {0375.20035},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__147_172343/}
}