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@article{DAN_1971_198_5_a9, author = {S. S. Ryshkov}, title = {On the reduction theory of positive quadratic forms}, journal = {Doklady Akademii Nauk}, pages = {1028--1031}, publisher = {mathdoc}, volume = {198}, number = {5}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_198_5_a9/} }
S. S. Ryshkov. On the reduction theory of positive quadratic forms. Doklady Akademii Nauk, Tome 198 (1971) no. 5, pp. 1028-1031. http://geodesic.mathdoc.fr/item/DAN_1971_198_5_a9/