Tien, Zhou Cien, and Joe Qi-lee. “Enhancing Vehicle Routing Problem Solutions through Deep Reinforcement Learning and Graph Neural Networks”. International Journal of Enterprise Modelling 16, no. 3 (September 30, 2022): 125–135. Accessed September 1, 2026. https://ieia.ristek.or.id/index.php/ieia/article/view/64.