A. Milecki. Progress in Automation, Robotics and Measuring Techniques, volume 350 of Advances in Intelligent Systems and Computing, Springer, Cham, (2015)
S. Levine, N. Wagener, and P. Abbeel. IEEE International Conference on Robotics and Automation, ICRA 2015, Seattle, WA, USA, 26--30 May, 2015, page 156--163. (2015)