VAN KHANH, Pham; VU ANH TUAN, Pham. BUILDING A VIETNAMESE MATH CHATBOT BASED ON RAG AND LLM: SYSTEM DESIGN, IMPLEMENTATION AND EXPERIMENTAL EVALUATION. HNUE Journal of Science: Journal of Natural Sciences, [S. l.], v. 70, n. 4, p. 43–56, 2025. DOI: 10.18173/2354-1059.2025-0053. Disponível em: https://hnuejs.edu.vn/ns/article/view/1284. Acesso em: 11 jul. 2026.