@article{GDZPPN00036522X, title = {X-Rays of Polygons.}, journal = {Discrete \& computational geometry}, volume = {7}, year = {1992}, pages = {281-294}, zbl = {0748.52003}, url = {http://dml.mathdoc.fr/item/GDZPPN00036522X} }
Gardner, R.J. X-Rays of Polygons.. Discrete & computational geometry, Tome 7 (1992) pp. 281-294. http://gdmltest.u-ga.fr/item/GDZPPN00036522X/