1. 1) Nayar, S.K., Krishnan, G., Grossberg, M.D. and Raskar, R.: Fast Separation of Direct and Global Components of a Scene using High Frequency Illumination, Proc. SIGGRAPH2006, pp.935-944 (2006).
2. 2) Hanrahan, P. and Krueger, W.: Reflection from layered surfaces due to subsurface scattering, Proc. SIGGRAPH1993, pp.165-174 (1993).
3. 3) Stam, J.: Multiple scattering as a diffusion process, Proc. Eurographics Rendering Workshop (1995).
4. 4) Dorsey, J., Edelman, A., Jensen, H.W., Legakis, J. and Pedersen, H.K.: Modeling and Rendering of Weathered Stone, Proc. SIGGRAPH'99, pp.225-234 (1999).
5. 5) Pharr, M. and Hanrahan, P.: Monte Carlo evaluation of non-linear scattering equations for subsurface reflection, Proc. SIGGRAPH2000, pp.75-84 (2000).