Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsWigner Function of Two-Dimensional Isotropic Harmonic Oscillatorhttp://demonstrations.wolfram.com/WignerFunctionOfTwoDimensionalIsotropicHarmonicOscillator/]]>http://demonstrations.wolfram.com/WignerFunctionOfTwoDimensionalIsotropicHarmonicOscillator/