• https://cs.dartmouth.edu/~wjarosz/publications/dissertation/chapter4.pdf
• http://luthuli.cs.uiuc.edu/~daf/courses/rendering/papers/lafortune96rendering.pdf
• http://www.pbr-book.org/3ed-2018/Light_Transport_II_Volume_Rendering/Volumetric_Light_Transport.html
• http://www.pbr-book.org/3ed-2018/contents.html
• http://www.pbr-book.org/3ed-2018/Light_Transport_I_Surface_Reflection/Direct_Lighting.html#
• http://www.pbr-book.org/3ed-2018/Light_Transport_II_Volume_Rendering/Sampling_Volume_Scattering.html#Medium::Sample
• https://www.ocf.berkeley.edu/~arunke/cs184/final/
• https://www.youtube.com/watch?v=nrZxwPwmgrw