@article{MZ_1994__216_4_174655,
     author = {Rainer L\"owen},
     title = {Topological pseudo-ovals, elation {Laguerre} planes, and elation generalized quadrangles.},
     journal = {Mathematische Zeitschrift},
     pages = {347--370},
     publisher = {mathdoc},
     volume = {216},
     number = {4},
     year = {1994},
     zbl = {0806.51009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1994__216_4_174655/}
}