Chan, K. C., X. Wang, K. Yu, C. Dong, and C. C. Loy. “Understanding Deformable Alignment in Video Super-Resolution”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 2, May 2021, pp. 973-81, https://ojs.aaai.org/index.php/AAAI/article/view/16181.