Seipp, Jendrik, and Malte Helmert. “Subset-Saturated Cost Partitioning for Optimal Classical Planning”. Proceedings of the International Conference on Automated Planning and Scheduling 29, no. 1 (May 25, 2021): 391-400. Accessed July 2, 2022. https://ojs.aaai.org/index.php/ICAPS/article/view/3503.