et. al, Lidia Nataly Somarriba Sokolova. “Helical Surfaces and Their Application in Engineering Design”. International Journal of Advanced Science and Technology 29, no. 2 (January 13, 2020): 1839 - 1846. Accessed April 25, 2024. http://sersc.org/journals/index.php/IJAST/article/view/3435.