@article{01247809, title = {On the number of representations of integers by quadratic forms in twelve variables.}, journal = {Georgian Mathematical Journal}, volume = {5}, year = {1998}, pages = {545-564}, doi = {10.1023/B:GEOR.0000008131.53617.18}, zbl = {0915.11023}, language = {en}, url = {http://dml.mathdoc.fr/item/01247809} }
Lomadze, G. On the number of representations of integers by quadratic forms in twelve variables.. Georgian Mathematical Journal, Tome 5 (1998) pp. 545-564. doi : 10.1023/B:GEOR.0000008131.53617.18. http://gdmltest.u-ga.fr/item/01247809/