Jian-Hua Xue, et al. “The Load Distribution With Modification and Misalignment and Thermal Elastohydrodynamic Lubrication Simulation of Helical Gears”. Global Journals of Research in Engineering, vol. 20, no. A1, Jan. 2020, pp. 17-34, https://engineeringresearch.org/index.php/GJRE/article/view/2032.