Smart Faq Chatbot System Using Nlp and Langchain for Educational Portals . International Journal of Environmental Sciences, [S. l.], p. 533–543, 2025. DOI: 10.64252/x8mgsv15. Disponível em: https://theaspd.com/index.php/ijes/article/view/7309.. Acesso em: 13 apr. 2026.