Mashhood Ishaque, Bettina Speckmann, Csaba D. Tóth. Shooting permanent rays among disjoint polygons in the plane. In John Hershberger, Efi Fogel, editors, Proceedings of the 25th ACM Symposium on Computational Geometry, Aarhus, Denmark, June 8-10, 2009. pages 51-60, ACM, 2009. [doi]
Abstract is missing.