Brian Osman, Michael Bukowski, Chris McEvoy. Practical implementation of dual paraboloid shadow maps. In Alan Heirich, Douglas Thomas, editors, Proceedings of the 2006 ACM SIGGRAPH symposium on Videogames, Sandbox '06, Boston, Massachusetts, USA, July 30-31, 2006. pages 103-106, ACM, 2006. [doi]
Abstract is missing.