Marc Levoy Edwin E. Catmull David Zeltzer Proceedings of the 1992 Symposium on Interactive 3D Graphics, SI3D '92, Cambridge, MA, USA, March 29 - April 1, 1992 I3D ACM 1992 0-89791-467-8 http://dl.acm.org/citation.cfm?id=147156 db/conf/si3d/si3d92.html