@article{01051458, title = {Modular properties of theta-functions and representation of numbers by positive quadratic forms.}, journal = {Georgian Mathematical Journal}, volume = {4}, year = {1997}, pages = {385-400}, doi = {10.1023/A:1022998613919}, zbl = {0879.11017}, language = {en}, url = {http://dml.mathdoc.fr/item/01051458} }
Vepkhvadze, T. Modular properties of theta-functions and representation of numbers by positive quadratic forms.. Georgian Mathematical Journal, Tome 4 (1997) pp. 385-400. doi : 10.1023/A:1022998613919. http://gdmltest.u-ga.fr/item/01051458/