Kadhim, Mohammed Abdulaal, and Mohammad Qasim Abdullah. “Modeling and Contact Stress Analysis of Crossed-Axes Helical Gear System”. International Journal of Automotive and Mechanical Engineering, vol. 22, no. 2, June 2025, pp. 12443-67, https://doi.org/10.15282/ijame.22.2.2025.15.0952.