@article{DAN_1993_328_4_a11,
     author = {V. I. Burdina},
     title = {The external form symmetry of stereohedra and coordination},
     journal = {Doklady Akademii Nauk},
     pages = {459--463},
     year = {1993},
     volume = {328},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_328_4_a11/}
}