CadTheory

Books, papers, articles, and courses on mathematical apparatus and models 

Books
|Gerald Farin, Curves and Surfaces for CAGD: A Practical Guide Among frequently referenced books on geometric modeling. Did not read personally.

|Jean Gallier, Curves and Surfaces in Geometric Modeling: Theory and Algorithms Among frequently referenced books on geometric modeling. Did not read personally.

|A Collection of links on NURBS theory from OpenNurbs

==Papers ==

Articles
|Interactive Tutorial on geometric modeling in CAD