Allegri, Gabriele, and Luca Giorleo. “Ring Rolling Speed Rolls Optimization to Improve Ring Quality and Reduce Production Time”. Journal of Mechanical Engineering and Sciences 14, no. 1 (March 23, 2020): 6272 - 6284. Accessed January 25, 2021. https://journal.ump.edu.my/jmes/article/view/1236.