Ravindran, Balaraman. “Advancements in Deep Reinforcement Learning: A Comparative Analysis of Policy Optimization Techniques”. International Journal of Emerging Trends in Computer Science and Information Technology, vol. 1, no. 1, Jan. 2020, pp. 18-28, https://doi.org/10.63282/3050-9246.IJETCSIT-V1I1P103.