@article{MAN_1977__228_162994,
     author = {Michio Ozeki},
     title = {On a {Property} of {Siegel} {Theta-Series.}},
     journal = {Mathematische Annalen},
     pages = {249--258},
     publisher = {mathdoc},
     volume = {228},
     year = {1977},
     zbl = {0337.10018},
     url = {http://geodesic.mathdoc.fr/item/MAN_1977__228_162994/}
}