WASET
    B. Engel and  H. Hassan,  Advanced Model for Calculation of the Neutral Axis Shifting and the Wall Thickness Distribution in Rotary Draw Bending Processes.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 98(2). 239 - 243
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10000412.