Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsLimit Sets for Schottky Groupshttp://demonstrations.wolfram.com/LimitSetsForSchottkyGroups/]]>http://demonstrations.wolfram.com/LimitSetsForSchottkyGroups/Nonperiodic Substitution Tiling of the Planehttp://demonstrations.wolfram.com/NonperiodicSubstitutionTilingOfThePlane/]]>http://demonstrations.wolfram.com/NonperiodicSubstitutionTilingOfThePlane/