M.Zadshakouyan and  E.Abdi Sobbouhi and  H.Jafarzadeh,  A Study on the Heading of Spur Gears: Numerical Analysis and Experiments.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 380 - 384
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/4370.