@article{ERAAMS_2004_10_a13,
     author = {Ziegler, G\"unter},
     title = {Projected products of polygons},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {122--134},
     publisher = {mathdoc},
     volume = {10},
     year = {2004},
     doi = {10.1090/S1079-6762-04-00137-4},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-04-00137-4/}
}