Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsDomino Substitution Tilingshttp://demonstrations.wolfram.com/DominoSubstitutionTilings/]]>http://demonstrations.wolfram.com/DominoSubstitutionTilings/Lattices in Perspectivehttp://demonstrations.wolfram.com/LatticesInPerspective/]]>http://demonstrations.wolfram.com/LatticesInPerspective/