@article{DAN_1963_151_3_a0,
     author = {A. I. Vinogradov},
     title = {On the zeros of {Siegel}},
     journal = {Doklady Akademii Nauk},
     pages = {479--481},
     publisher = {mathdoc},
     volume = {151},
     number = {3},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_151_3_a0/}
}