1. Frontline Robotics, Autonomous Perimeter Security.
http://www.frontline-robotics.com/
2. Caracciolo, L., de Luca, A., Iannitti, S.: Trajectory tracking control of a four-wheel differentially driven mobile robot. In: Proceedings 1999 IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C), vol. 4, pp. 2632–2638 (1999)
3. D’Andrea-Novel, B., Campion, G., Bastin, G.: Control of wheeled mobile robots not satisfying ideal velocity constraints: a singular perturbation approach. Int. J. Robust. Nonlinear Control 5(4), 243–267 (1995)
4. Domski, W., Mazur, A., Kaczmarek, M., Cholewiński, M.: Extended factitious force method in control of mobile manipulators with skid steering mobile platforms. In: Proceedings of the Polish National Conference on Robotics. Kudowa Zdrój, vol. 2, pp. 519–530. In Polish (2016)
5. Dulȩba, I.: Modeling and Control of mobile manipulators. In: Proceedings of the 6th IFAC Symposium on Robot Control SYROCO’00, Vienna, pp. 687–692 (2000)