@article{DAN_1965_162_2_a8,
     author = {S. S. Ryshkov},
     title = {Some remarks on the types of $n$-dimensional parallelehedra and on the density of latticed coverings 
},
     journal = {Doklady Akademii Nauk},
     pages = {277--280},
     publisher = {mathdoc},
     volume = {162},
     number = {2},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_162_2_a8/}
}