Bu, Zhaoxing, and Richard E. Korf. “A*+BFHS: A Hybrid Heuristic Search Algorithm”. Proceedings of the AAAI Conference on Artificial Intelligence 36, no. 9 (June 28, 2022): 10138-10145. Accessed October 14, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/21253.