Dinh, V.T., Le, T.Q., Do, T.T., Vu, N.P. and Tran, T.P.T. 2025. Multi-Objective Optimization of Material Removal Rate and Surface Roughness in Ultrasonic Vibration-Assisted EDM Using NSGA-II, GPR, and AHP. Engineering, Technology & Applied Science Research. 15, 4 (Aug. 2025), 24977–24984. DOI:https://doi.org/10.48084/etasr.11380.