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generic_user · 2016-01-28 · Original thread
This looks like a slimmed down version of the book Realistic Ray Tracing writen by the same author Peter Shirley. The book is still very short ~200 pages and develops a raytracer.

http://www.amazon.com/Realistic-Tracing-Second-Peter-Shirley...

He has also written one of my favorite general introductions to computer graphics if your looking for a usable survey text that has most of the basic formulas.

http://www.amazon.com/Fundamentals-Computer-Graphics-Fourth-...

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