Boyarski, E., A. Felner, P. Le Bodic, D. D. Harabor, P. J. Stuckey, and S. Koenig. “F-Aware Conflict Prioritization & Improved Heuristics For Conflict-Based Search”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 14, May 2021, pp. 12241-8, https://ojs.aaai.org/index.php/AAAI/article/view/17453.