@article{DAN_1973_209_6_a12,
     author = {P. Tammela},
     title = {On the reduction theory of positive quadratic forms},
     journal = {Doklady Akademii Nauk},
     pages = {1299--1302},
     publisher = {mathdoc},
     volume = {209},
     number = {6},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_6_a12/}
}