1. Wallach, B. A., Koselka, H. A., & Gollaher, D. L. (2002). US6496755B2—Autonomous multi-platform robot system. Google Patents.
2. Zhou, T. T. G., Zhou, D. T. X., & Zhou, A. H. B. (2014). US20140254896A1—Unmanned drone, robot system for delivering mail, goods, humanoid security, crisis negotiation, mobile payments, smart humanoid mailbox and wearable personal exoskeleton heavy load flying machine. Google Patents.
3. Knepper, R. A., Layton, T., Romanishin, J., & Rus, D. (2013). IkeaBot: An autonomous multi-robot coordinated furniture assembly system. In Proceedings—IEEE international conference on robotics and automation (pp. 855–862). IEEE.
https://doi.org/10.1109/icra.2013.6630673
.
4. Dorling, K., Heinrichs, J., Messier, G. G., & Magierowski, S. (2017). Vehicle routing problems for drone delivery. IEEE Transactions on Systems, Man, and Cybernetics Systems,47, 70–85.
5. Choi, D., Kim, M., & Oh, J. H. (2012). Development of a rapid mobile robot with a multi-degree-of-freedom inverted pendulum using the model-based zero-moment point stabilization method. Advanced Robotics,26, 515–535.