@article{10_4153_CJM_1967_109_3,
     author = {Shephard, G. C.},
     title = {Polytopes with {Centrally} {Symmetric} {Faces}},
     journal = {Canadian journal of mathematics},
     pages = {1206--1213},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-109-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-109-3/}
}