DARMORA, D P. Draft Requirement of a Shovel Type Furrow Opener under Coarse Textured Soil Condition. Journal of Agricultural Engineering, India, v. 44, n. 3, 2007. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14477. Acesso em: 6 jun. 2026.