Dinh, Van Thanh, et al. “A Multi-Objective Optimization Approach for the Two-Stage Helical Gearbox Design Using NSGA-II: Balancing Efficiency and Structural Compactness”. Engineering, Technology & Applied Science Research, vol. 15, no. 6, Dec. 2025, pp. 29319-24, doi:10.48084/etasr.13333.