B. Engel and  Sara Salman Hassan Al-Maeeni ,  Failure Analysis and Fatigue Life Estimation of a Shaft of a Rotary Draw Bending Machine .   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2017, vol. 131(11). 1785 - 1790
    [viewed 05 December 2019]. Available from: https://publications.waset.org/pdf/10008163.