1. "[1] Antonescu O., Antonescu P.: "Mechanism and machine science", coursebook, Politehnica Press, Bucharest, 2016;
2. [2] Wang Z., Gu H.: "A review of locomotion mechanisms of urban search and rescue robot", Industrial Robot: An International Journal, Vol. 34, Issue 5, pp. 400-411, 2007;
3. [3] Faruk Kececi, E.: "Design and prototype of mobile robots for rescue operations", Robotics, Vol. 27, pp. 729-737, 2009;
4. [4] Lim S.H., Teo J.: "Recent Advances on Locomotion Mechanisms of Hybrid Mobile Robots", Vol. 14, pp. 11-25, 2015;
5. [5] Jakimovski B., Horenz M., Kotke M., Maehle E.: "Design of a Hybrid Wheeled-Legged Robot - WheeHy", ISR/Robotik, pp. 1233-1238, 2010;