@article{10_4153_CJM_1974_032_5,
     author = {Shephard, G. C.},
     title = {Combinatorial {Properties} of {Associated} {Zonotopes}},
     journal = {Canadian journal of mathematics},
     pages = {302--321},
     year = {1974},
     volume = {26},
     number = {2},
     doi = {10.4153/CJM-1974-032-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-032-5/}
}