Uhl, Tadeusz, and Tomasz Buratowski. “The 2-Wheeled Mobile Robots Capable of Cooperating in Group of Robots”. Journal of Automation, Mobile Robotics and Intelligent Systems, vol. 1, no. 1, Jan. 2013, pp. 24-31, https://www.jamris.org/index.php/JAMRIS/article/view/6.