@article{GDZPPN002033917,
title = {Polarities of G. Higman's symmetric design and a strongly regular graph on 176 vertices.},
journal = {Aequationes mathematicae},
volume = {25},
year = {1982},
pages = {77-82},
zbl = {0518.05039},
url = {http://dml.mathdoc.fr/item/GDZPPN002033917}
}
Brouwer, A.E. Polarities of G. Higman's symmetric design and a strongly regular graph on 176 vertices.. Aequationes mathematicae, Tome 25 (1982) pp. 77-82. http://gdmltest.u-ga.fr/item/GDZPPN002033917/