1. Labenda P., Sadek T., Heckes L., 5th IFAC Sym. Mech. Syst., (2010)
2. Murphy R. R., Tadokoro S., Nardi D., Jacoff A., Fiorini Paolo, Choset H., Erkmen A. M., Springer Handbook of Robotics, (Springer, Berlin, Heidelberg, 2008)
3. Hasnan K., Bakhsh Q., Ahmed A., Das B. and Ayub S., ICGCE (2015)
4. Zamanov V., Dimitrov A., RAM, (2011)