Nguyen, T.M.D. and Nguyen, V.B. 2026. Investigating Demographic Variations in the Use of Online Public Services: A UTAUT-Based Multigroup Analysis. Emerging Science Journal. 10, 3 (Jun. 2026), 1772–1789. DOI:https://doi.org/10.28991/ESJ-2026-010-03-032.