Books by Robert J. (http://www.langorigami.com Lang

The magnum opus of one of the worlds leading origami artists, the second edition of Origami Design Secrets reveals the underlying concepts of origami and how to create original origami designs

This book describes the underlying principles and mathematics of the broad and exciting field of abstract and mathematical origami, most notably the field of origami tessellations. It contains folding instructions, underlying principles, mathematical concepts, and many beautiful photos of the latest work in this fast-expanding field.

"This book is an opus of world-famous origamist Robert J. Lang that presents the mathematical and design principles he uses to create original origami. The techniques are accompanied by folding instructions that illustrate them, building up to very advanced models at the end of the book. The second edition includes three new/highly revised chapters on box pleating, uniaxial box pleating, and polygon packing as well as smaller revisions throughout and improved illustrations"--