@article{IM2_2005_69_6_a9,
     author = {S. S. Ryshkov and E. A. Bolshakova},
     title = {On the theory of mainstay parallelohedra},
     journal = {Izvestiya. Mathematics },
     pages = {1257--1277},
     publisher = {mathdoc},
     volume = {69},
     number = {6},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2005_69_6_a9/}
}