Li, Bonan, Yinhan Hu, Songhua Liu, Zeyu Xiao, and Xinchao Wang. “FreLay: Frequency-Aware Energy Function for Training-Free Layout-to-Image Generation”. Proceedings of the AAAI Conference on Artificial Intelligence 40, no. 8 (March 14, 2026): 5992–6000. Accessed May 27, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/37522.