@article{DCG_1992__7_4_131196,
     author = {R.J. Gardner},
     title = {X-Rays of {Polygons.}},
     journal = {Discrete & computational geometry},
     pages = {281--294},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1992},
     zbl = {0748.52003},
     url = {http://geodesic.mathdoc.fr/item/DCG_1992__7_4_131196/}
}