A system is described for displaying images of a virtual three-dimensional book having one or more virtual pages. The system comprises a display system capable of executing a display program wherein images of the virtual three-dimensional book are produced on the display system. The display system may...http://www.google.com/patents/US7069518?utm_source=gb-gplus-sharePatent US7069518 - Indexing methods, systems, and computer program products for virtual three-dimensional books
