Threshing and Grain Separating Mechanism with Differentiate Concave for Intensification of Threshing and Grain Separation. Agricultural Engineering , [S. l.], v. 21, n. 3, p. 29–45, 2017. Disponível em: https://ojs.agriceng.org/index.php/AgricEng/article/view/33.. Acesso em: 8 jan. 2025.