Breyer, Teresa, and Richard Korf. “Independent Additive Heuristics Reduce Search Multiplicatively”. Proceedings of the AAAI Conference on Artificial Intelligence 24, no. 1 (July 3, 2010): 33–38. Accessed May 21, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/7547.