@article{02142913,
title = {Association schemes of affine type over finite rings.},
journal = {Advances in Geometry},
volume = {4},
year = {2004},
pages = {241-261},
doi = {10.1515/advg.2004.015},
zbl = {1117.05112},
language = {en},
url = {http://dml.mathdoc.fr/item/02142913}
}
Tanaka, Hajime. Association schemes of affine type over finite rings.. Advances in Geometry, Tome 4 (2004) pp. 241-261. doi : 10.1515/advg.2004.015. http://gdmltest.u-ga.fr/item/02142913/