Wray, Kyle, Shlomo Zilberstein, and Abdel-Illah Mouaddib. “Multi-Objective MDPs With Conditional Lexicographic Reward Preferences”. Proceedings of the AAAI Conference on Artificial Intelligence 29, no. 1 (March 4, 2015). Accessed March 28, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/9647.