Pan, L., Q. Cai, Z. Fang, P. Tang, and L. Huang. “A Deep Reinforcement Learning Framework for Rebalancing Dockless Bike Sharing Systems”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 1393-00, doi:10.1609/aaai.v33i01.33011393.