NEXA: An Intelligent Conversational Framework for Automated Customer Support System . International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 4, n. 02, p. 945–951, 2026. DOI: 10.47392/IRJAEH.2026.0136. Disponível em: https://irjaeh.com/index.php/journal/article/view/1369.. Acesso em: 15 apr. 2026.