@article{DCG_1991__6_4_131145,
     author = {H. Martini},
     title = {Convex {Polytopes} {Whose} {Projection} {Bodies} and {Difference} {Sets} {Are} {Polars.}},
     journal = {Discrete & computational geometry},
     pages = {83--92},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0679.52002},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131145/}
}