Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsManipulability Ellipsoid of a Robot Armhttp://demonstrations.wolfram.com/ManipulabilityEllipsoidOfARobotArm/]]>http://demonstrations.wolfram.com/ManipulabilityEllipsoidOfARobotArm/Denavit-Hartenberg Parameters for a Three-Link Robothttp://demonstrations.wolfram.com/DenavitHartenbergParametersForAThreeLinkRobot/]]>http://demonstrations.wolfram.com/DenavitHartenbergParametersForAThreeLinkRobot/