@article{DAN_1975_224_2_a14, author = {A. L. Berdichevskii and V. L. Berdichevsky}, title = {Proof of a {Polya} hypothesis}, journal = {Doklady Akademii Nauk}, pages = {313--315}, publisher = {mathdoc}, volume = {224}, number = {2}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_2_a14/} }