Zhang, Haoran, Xiangdong Su, Xingxiang Zhou, and Guanglai Gao. “SSAN: A Symbol Spatial-Aware Network for Handwritten Mathematical Expression Recognition”. Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 21 (April 11, 2025): 22398–22406. Accessed May 29, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/34396.