An Automatic Drawing Spur Gears Based on AutoCAD Program. Tikrit Journal of Engineering Sciences, [S. l.], v. 28, n. 1, p. 64–70, 2021. DOI: 10.25130/tjes.28.1.07. Disponível em: https://tj-es.com/ojs/index.php/tjes/article/view/178.. Acesso em: 13 sep. 2026.