Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsMotion of Three Magnetic Vorticeshttp://demonstrations.wolfram.com/MotionOfThreeMagneticVortices/]]>http://demonstrations.wolfram.com/MotionOfThreeMagneticVortices/