@article{SM_1989_62_2_a0,
     author = {A. N. Andrianov},
     title = {Spherical theta series},
     journal = {Sbornik. Mathematics},
     pages = {289--304},
     year = {1989},
     volume = {62},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_62_2_a0/}
}