VolleyBots: A Testbed for Multi-Drone Volleyball Game Combining Motion Control and Strategic Play - Xu, Zelai; Zhang, Ruize; Yu, Chao; Yuan, Huining; Yi, Xiangmin; Ji, Shilong; Wang, Chuqi; Tang, Wenhao; Gao, Feng; Ding, Wenbo; Chen, Xinlei; Wang, Yu (Advances in Neural Information Processing Systems, 2025)