Levy, Daniel, and Stefano Ermon. “Deterministic Policy Optimization by Combining Pathwise and Score Function Estimators for Discrete Action Spaces”. Proceedings of the AAAI Conference on Artificial Intelligence 32, no. 1 (April 29, 2018). Accessed April 12, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/11822.