http://www.flickr.com/photos/28426922@N02/galleries/72157624947697214

http://www.ibm.com/developerworks/rational/library/2741.html

http://borgcube636.deviantart.com/art/A-Symmetry-of-Imperfection-201532797

http://lydsagain.wordpress.com/2011/02/28/symmetry/
http://lydsagain.wordpress.com/2011/02/28/symmetry/

http://www.zazzle.com/pink_orange_radial_lines_custom_template_flyer-244967722152659394