@article{JRAM_1985__357_152714,
     author = {A. Neumaier},
     title = {Characerization of a class of distance regular graphs.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {182--192},
     publisher = {mathdoc},
     volume = {357},
     year = {1985},
     zbl = {0552.05042},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1985__357_152714/}
}