LE, Dinh Phu Cuong; NGUYEN, Ngoc Tam; NGUYEN, Xuan Truong; BUI, Minh Quang. An E-Commerce Web Simulation System (UPT-Shopping): Integrating PayPal and Chatbot-AI to Support Users in Payment and Quick Response. The University of Phan Thiet Journal of Science, [S. l.], v. 3, n. 3, p. 32–40, 2025. Disponível em: https://tapchikhoahocupt.vn/index.php/uptjs/article/view/uptjs-56-2025.. Acesso em: 21 jan. 2026.