1. Facts and Figures about Dubai International Airport: 〈http://www.dubaiairport.com/DIA/English/TopMenu/About+DIA/Facts+and+Figures/〉.
2. M.A. Jarrah, M. Al-Kheder, Controller design of the locomotion system for an autonomous cleaning system, IEEE International Conference on Mechatronics, Istanbul, June, 2004.
3. Locomotion of a two-dimensional walking–climbing robot using a closed-loop mechanism: from gait generation to navigation;Chen;The International Journal of Robotics Research,2003
4. A. Nagakubo, S. Hirose, Walking and running of the quadruped wall-climbing robot, in: Proceedings of the IEEE International Conference on Robotics and Automation, 1994, pp. 1005–1012.
5. Design, implementation, and evaluation of an under-actuated miniature biped climbing robot;Minor;The International Journal of Robotics Research,2005