Pham, T. V.; Phan, N. M.; Cao, B. Q.; Truong, C. P.; Nguyen, T. D.; Tien, M. V.; Nguyen, N. S. A Self-Reflection Mechanism for Reducing Hallucination in Vietnamese Legal Question Answering Systems. Sci. J. Comput. Sci. 2026, 2, 72-80.