Barley, Michael, Patricia Riddle, Carlos Linares López, Sean Dobson, and Ira Pohl. “GBFHS: A Generalized Breadth-First Heuristic Search Algorithm”. Proceedings of the International Symposium on Combinatorial Search 9, no. 1 (September 1, 2021): 28-36. Accessed May 5, 2026. https://ojs.aaai.org/index.php/SOCS/article/view/18452.