1. AGMA Standard 2001-D04 (2004) Fundamental rating factors and calculation methods for involute spur and helical gear teeth. American Gear Manufacturers Association, Alexandria
2. ISO Standard 6336-2:2006 (2006) Calculation of load capacity of spur and helical gears-Part 2: calculation of surface durability (pitting). International Organization for Standardization, Geneva
3. ISO Standard 6336-3:2006 (2006) Calculation of load capacity of spur and helical gears-Part 3: calculation of tooth bending strength. International Organization for Standardization, Geneva
4. Andrews JD (1991) A finite element analysis of bending stresses induced in external and internal involute spur gears. J Strain Anal Eng Des 26:153–163. https://doi.org/10.1243/03093247V263153
5. Kawalec A, Wiktor J (2004) Tooth-root stress calculation of internal spur gears. J Eng Manuf 218:1153–1165. https://doi.org/10.1243/0954405041897185