@article{02161286,
title = {On the graphs of Hoffman-Singleton and Higman-Sims.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {11},
year = {2004},
zbl = {1060.05073},
language = {en},
url = {http://dml.mathdoc.fr/item/02161286}
}
Hafner, Paul R. On the graphs of Hoffman-Singleton and Higman-Sims.. The Electronic Journal of Combinatorics [electronic only], Tome 11 (2004) . http://gdmltest.u-ga.fr/item/02161286/