Oancea, Nicolae, Virgil Teodor, and Loredana Bizim. “A New Mathematical Model for Helical Drill Back Face Geometry Study”. Annals of ”Dunarea de Jos” University of Galati, Fascicle V, Technologies in machine building 24 (September 15, 2006): 35-39. Accessed July 22, 2024. https://gup.ugal.ro/ugaljournals/index.php/tmb/article/view/2064.