@article{GDZPPN002106914,
title = {Values of quadratic forms at primitive integral points.},
journal = {Inventiones mathematicae},
volume = {96},
year = {1989},
pages = {405-424},
zbl = {0682.22008},
url = {http://dml.mathdoc.fr/item/GDZPPN002106914}
}
Margulis, G.A.; Dani, S.G. Values of quadratic forms at primitive integral points.. Inventiones mathematicae, Tome 96 (1989) pp. 405-424. http://gdmltest.u-ga.fr/item/GDZPPN002106914/