Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsThe Riemann Zeta Function in Four Dimensionshttp://demonstrations.wolfram.com/TheRiemannZetaFunctionInFourDimensions/]]>http://demonstrations.wolfram.com/TheRiemannZetaFunctionInFourDimensions/