1. Lecture notes in control and information sciences;A. T. Almeida De,1998
2. Dezfouli, S. (2011): Global trends in cost oriented autonomous robot market. MSc Thesis, Vienna University of Technology.
3. Haegele, M., Nilsson, K. (2006): SMErobot: the European robot initiative for strengthening the competitiveness of SMEs in manufacturing. Key-note at the European robotics conference (EUROS 2006), March 17th, 2006, Palermo, Italy.
4. International Federation of Robotics (IFR) (2011): World robotics 2011. Frankfurt: IFR Statistical Department.
5. Kim, J. W. (2006): Humanoid robots. Course material for the summer school, KAIST, Taejon, Korea, 2006.