Tej Dallej Nicolas Andreff Philippe Martinet Image-Based Visual Servoing of the I4R parallel robot without Proprioceptive Sensors. 1709-1714 2007 conf/icra/2007 ICRA http://dx.doi.org/10.1109/ROBOT.2007.363569 db/conf/icra/icra2007.html#DallejAM07