Ivanov, V., and A. Ivanov. “Rolling of Rotationally Shaped Surfaces With Tangential Feeding of the Blanks. Force Characteristics”. Advanced Technologies and Materials, vol. 29, no. 1-2, Dec. 2004, pp. 67-76, https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2004.29.1-2.7.