1. Barzel, R.: Lighting controls for computer cinematography. J. Graph. Tools 2(1), 1–20 (1997)
2. Birn, J.: Digital Lighting and Rendering, 2nd edn. New Riders Publishing, Thousand Oaks (2005)
3. Blender Online Community: Blender—a 3d modelling and rendering package (2015). http://www.blender.org
4. Damez, C., Slusallek, P., Walter, B.J., Myszkowski, K., Wald, I., Christensen, P.H.: Global illumination for interactive applications and high-quality animations. SIGGRAPH 2003 Course Note #27, ACM, pp. 27–31. San Diego, USA (2003)
5. Hachisuka, T., Ogaki, S., Jensen, H.W.: Progressive photon mapping. ACM Trans. Graph. 27(5), 130:1–130:8 (2008)