1. United Nations Economic Commission for Europe (UNECE) and International Federation of Robotics (IFR), http://www.unece.org/stats/robotics/.
2. G. Hirzinger, Why robots are just around the corner, Pictures of the Future Magazine, Siemens, 2002, 62–65.
3. J. Albaladejo, Codesign of a real time image processor, PhD thesis (in Spanish), Computer Engineering Department, Technical University of Valencia, 2003.
4. Computer Vision and Robotics, University of Girona, http://iiia.udg.es/English/VICOROB_english.html.
5. X. Armagué, Modelling stereoscopic vision systems for robotic applications, PhD thesis, Universitat de Girona, Spain, 2003.