Xu, Chenxin, Siheng Chen, Maosen Li, and Ya Zhang. 2021. “Invariant Teacher and Equivariant Student for Unsupervised 3D Human Pose Estimation”. Proceedings of the AAAI Conference on Artificial Intelligence 35 (4):3013-21. https://ojs.aaai.org/index.php/AAAI/article/view/16409.