“Sparse, Dense, or Hybrid? Comparing Retrieval Strategies for Biomedical Question Answering with Retrieval-Augmented Generation”, J. Sci. Innov. Soc. Impact, vol. 2, no. 2, pp. 141–152, May 2026, Accessed: Jun. 22, 2026. [Online]. Available: https://pinnaclepubs.com/index.php/JSISI/article/view/727