Shen, Bojie, Muhammad Aamir Cheema, Daniel D. Harabor, and Peter J. Stuckey. “Contracting and Compressing Shortest Path Databases”. Proceedings of the International Conference on Automated Planning and Scheduling 31, no. 1 (May 17, 2021): 322–330. Accessed May 25, 2026. https://ojs.aaai.org/index.php/ICAPS/article/view/15977.