@article{DAN_1970_194_3_a8,
     author = {S. S. Ryshkov},
     title = {The polyhedron $\mu(m)$ and certain extremal problems of the geometry of numbers},
     journal = {Doklady Akademii Nauk},
     pages = {514--517},
     publisher = {mathdoc},
     volume = {194},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a8/}
}