Ohnishi, K., S. Yamamoto, Y. Ushiku, and T. Harada. “Hierarchical Video Generation From Orthogonal Information: Optical Flow and Texture”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 32, no. 1, Apr. 2018, https://ojs.aaai.org/index.php/AAAI/article/view/11881.