S. S. Ryshkov, E. P. Baranovskii, $C$-types of $n$-dimensional lattices and 5-dimensional primitive parallelohedra (with application to the theory of coverings), Trudy Mat. Inst. Steklov., 137, ed. S. M. Nikol'skii, 1976, 132 ñ. http://mi.mathnet.ru/book1205
