Chen, Zhe, Jiaoyang Li, Daniel Harabor, Peter J. Stuckey, and Sven Koenig. “Multi-Train Path Finding Revisited”. Proceedings of the International Symposium on Combinatorial Search 15, no. 1 (July 17, 2022): 38-46. Accessed April 30, 2026. https://ojs.aaai.org/index.php/SOCS/article/view/21750.