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Ray Tracing with Caustics
Ray Tracing

References
Henrik Wann Jensen
http://graphics.ucsd.edu/~henrik/

A Practical Guide to Global Illumination using Photon Mapping (Siggraph 2001 Course 39)
http://graphics.cs.uni-sb.de/.../Download/Papers/38cdrom.pdf

Through the Looking Glass
http://graphics.cs.uni-sb.de/.../Looking_Glass.htm

Ray Tracing - Mario L. Garcia
http://www.ma.utexas.edu/users/mlg/RayTracer/UsersGuide.html

Computer Graphics - Tom Kluyskens
http://homepage.mac.com/tkluysk/ens/computer/3d.html