books.google.de - Foremost book available on polytopes, incorporating ancient Greek and most modern work done on them. Beginning with polygons and polyhedrons, the book moves on to multi-dimensional polytopes in a way that anyone with a basic knowledge of geometry and trigonometry can easily understand. Definitions of...http://books.google.de/books/about/Regular_Popytopes.html?hl=de&id=iWvXsVInpgMC&q=graph&utm_source=gb-gplus-shareRegular Popytopes