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@article{DAN_1973_212_1_a10, author = {S. S. Ryshkov}, title = {$\mathrm{C}$-type of $n$-dimensional parallelehedra}, journal = {Doklady Akademii Nauk}, pages = {46--49}, publisher = {mathdoc}, volume = {212}, number = {1}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a10/} }
S. S. Ryshkov. $\mathrm{C}$-type of $n$-dimensional parallelehedra. Doklady Akademii Nauk, Tome 212 (1973) no. 1, pp. 46-49. http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a10/