Yu , Keke,  Qi Shen, Qi Lou, Yitian Zhang, and Xin Ni. “A Deep Reinforcement Learning Approach to Enhancing Liquidity in the U.S. Municipal Bond Market: An Intelligent Agent-Based Trading System”. Journal of Advanced Computing & Intelligent Systems 4, no. 3 (March 5, 2024): 1–15. Accessed October 6, 2026. https://learnedvertex.com/index.php/JACIS/article/view/74.