@article{MZ_1980__174_173006,
     author = {Arnold Neumaier},
     title = {Cliques and {Claws} in {Edge-transitive} {Strongly} {Regular} {Graphs.}},
     journal = {Mathematische Zeitschrift},
     pages = {197--202},
     publisher = {mathdoc},
     volume = {174},
     year = {1980},
     zbl = {0423.05019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__174_173006/}
}