Design and Development of a WhatsApp Chatbot-Based Expert System Using the Depth-First Search Algorithm for Thesis Topic Recommendation. Jurnal Ilmiah Informatika dan Komputer, [S. l.], v. 2, n. 2, p. 169–174, 2025. DOI: 10.69533/6c7k7s60. Disponível em: https://ejournal.rizaniamedia.com/index.php/informatech/article/view/491.. Acesso em: 17 mar. 2026.