Reddit reviews Origami 4 (Origami (AK Peters))

Erik Demaine, Robert Lang and Tom Hull have great ones. Also check out the OSME conference proceedings. These people are always happy to talk via email if you have any questions, but you will have to look them up.

• Origami Design Secrets by Robert Lang
  
• Project Origami by Tom Hull
  
• Geometric Folding Algorithms by Erik Demaine
  
• 4OSME Proceedings
  
• 3OSME Proceedings
  
  Also I heard this one is good but I haven't seen it yet: Origamics: Mathematical Explorations through Paperfolding by Kazuo Haga, who I believe was one of the first to write academically about origami.

I've been meaning to check out these books which claim to be about that exact topic: Origami^3, Origami^4 and Origami^5. They are a conferance about mathematics and Origami, with the books put together by Thomas Hull. There is most likely also an Origami^1 and Origami^2, but I am unable to find them for sale anywhere.

I actually worked on it from the text instruction in Origami^4. It's one of the angle variants described there.

I think the 90 degree base model celes might be around in video format somewhere, but I've never looked it up. Sorry. :(