J. Xie, R. Gao, Z. Zheng, S.-C. Zhu, and Y. N. Wu, “Motion-Based Generator Model: Unsupervised Disentanglement of Appearance, Trackable and Intrackable Motions in Dynamic Patterns”, AAAI, vol. 34, no. 07, pp. 12442-12451, Apr. 2020.