Ji, X., G. Tao, Y. Cao, Y. Tai, T. Lu, C. Wang, J. Li, and F. Huang. “Frequency Consistent Adaptation for Real World Super Resolution”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 2, May 2021, pp. 1664-72, https://ojs.aaai.org/index.php/AAAI/article/view/16259.