1. Booz Allen: Unearthing the subterranean environment. https://www.subtchallenge.com. Accessed 06 Apr 2020
2. Alves, J., Dias, J.: Design and control of a spherical mobile robot. Proc. Inst. Mech. Eng. Part I J. Syst. Control Eng. 217(6), 457–467 (2003)
3. Hanxu, S., Aiping, X., Qingxuan, J., Liangqing, W.: Omnidirectional kinematics analysis on bi-driver spherical robot. J. Beijing Univ. Aeronaut. Astronaut. 31, 735–739 (2005)
4. Bhattacharya, S., Agrawal, S.K.: Spherical rolling robot: a design and motion planning studies. IEEE Trans. Robot. Autom. 16(6), 835–839 (2000)
5. Borrmann, D., Jörissen, S., Nüchter, A.: RADLER - A RADial LasER scanning device. In: Proceedings of the 16th International Symposium of Experimental Robotics (ISER ’18), Springer Tracts in Advanced Robotics, pp. 655–664, Buenos Aires, Argentina (2018)