@article{GMJ_1997__4_4_47768,
     author = {Vepkhvadze, T.},
     title = {Modular properties of theta-functions and representation of numbers by positive quadratic forms.},
     journal = {Georgian Mathematical Journal},
     pages = {385--400},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1997},
     zbl = {0879.11017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1997__4_4_47768/}
}