R. Lumbantoruan, A. M. Sinaga, M. P. Hutagalung, P. C. N. Parapat, and M. T. Simanjuntak, “Evaluating LLM-Based Institutional Information Chatbot Responses Using a Preliminary Human-Scored Analytic Rubric and Automatic Metrics”, ELINVO, vol. 11, no. 1, pp. 85–99, Jul. 2026.