@article{MZ_1973__135_171999,
     author = {Mark P. jr. Hale and Ernest E. Shult},
     title = {Equiangular {Lines,} the {Graph} {Extension} {Theorem,} and {Transfer} in {Triply} {Transitive} {Groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {111--124},
     publisher = {mathdoc},
     volume = {135},
     year = {1973},
     zbl = {0351.20002},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__135_171999/}
}