M. R. Wijaya, A. Namira, A. Syafika, and S. F. Dalimunthe, “AI-Based Chatbot Development for Academic Information Services at Universitas Negeri Medan and an Analysis of Indonesian Language Usage”, j. of artif. intell. and eng. appl., vol. 5, no. 3, pp. 4211–4222, Jun. 2026.