• ​http://arievvisuals.com/tutorials​

• ​https://unionassets.com/blog/the-effect-of-the-gravitational-lens-195​

• ​https://en.wikipedia.org/wiki/Principal_component_analysis​

• ​https://softologyblog.wordpress.com/category/strange-attractors/​

• ​https://syntopia.github.io/StrangeAttractors/​

• ​https://www.behance.net/chaotic_atmospheres​

• ​http://www.mandelbulb.com/​

• ​http://bugman123.com/Hypercomplex/​

• ​http://www.karlsims.com/rd.html​

• ​http://www.3d-meier.de/​

Shaders and Materials

• ​http://www.shaderslab.com/shaders.html​

• ​https://developer.nvidia.com/gpugems/GPUGems/gpugems_pref01.html​

• ​https://support.allegorithmic.com/documentation/sddoc/mdl-material-definition-language-145653991.html​

• ​https://www.nvidia.com/en-us/design-visualization/technologies/material-definition-language/​

• ​http://thhube.github.io/tutorials/osl/osl.html​

Physical Properties

• ​https://forums.cgsociety.org/t/a-complete-ior-list/1070401​

• ​https://en.wikipedia.org/wiki/Refractive_index​

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