http://www.robertdebbane.com/main.html

http://www.flickr.com/photos/mureena/505835150/

 

http://modcult.org/tags/penrose%20tiling

http://www.uwgb.edu/dutchs/symmetry/penrose.htm

http://peterlu.org/girihtiles

http://www.roentgenwerke.com/03currentexhibition.html