http://hmi.ewi.utwente.nl/verslagen/capita-selecta/CS-Jimenez-Kwast-Daniel.pdf

http://agwp.glassner.com/computer-graphics/cga-columns/

http://illmatics.com/Understanding_the_LFH_Slides.pdf

http://jaspervdg.wordpress.com/2014/05/05/smooth-transitions-in-mesh-gradients/

http://elementalray.wordpress.com/2014/05/05/new-gi-preview/

http://aras-p.info/blog/2014/05/05/shader-compilation-in-unity-4-dot-5/