M. M. Faisal, J. Ferzund, A. Shaf, and A. Aldhahri, “Contextual Query Expansion: Transforming Question Answering with an MLM-Based Approach Using A Transformer Model”, Eng. Technol. Appl. Sci. Res., vol. 16, no. 1, pp. 31591–31599, Feb. 2026.