@article{02040370,
title = {A four-class association scheme derived from a hyperbolic quadric in },
journal = {Advances in Geometry},
volume = {4},
year = {2004},
pages = {105-117},
doi = {10.1515/advg.2004.001},
zbl = {1036.05051},
language = {en},
url = {http://dml.mathdoc.fr/item/02040370}
}
Fujisaki, Tatsuya. A four-class association scheme derived from a hyperbolic quadric in . Advances in Geometry, Tome 4 (2004) pp. 105-117. doi : 10.1515/advg.2004.001. http://gdmltest.u-ga.fr/item/02040370/