Terrain-perception-free Quadrupedal Spinning Locomotion on Versatile Terrains: Modeling, Analysis, and Experimental Validation. - Zhu, Hongwu; Wang, Dong; Deng, Ganyu; Boyd, Nathan; Zhou, Ziyi; Ruan, Lecheng; Sun, Caiming; Zhang, Aidong; Ding, Ning; Zhao, Ye; Luo, Jianwen (CoRR, 2021)