Katja Daubert Jan Kautz Hans-Peter Seidel Wolfgang Heidrich Jean-Michel Dischler Efficient Light Transport Using Precomputed Visibility. 28-37 2003 23 IEEE Computer Graphics and Applications 3 http://csdl.computer.org/comp/mags/cg/2003/03/g3028abs.htm db/journals/cga/cga23.html#DaubertKSHD03