EBRAHIM, Ismail Z; AMER EISSA, Ayman Hafiz; WANG, Yingkuan. Vertical brush seed metering device for sweet sugar beet planter. International Journal of Agricultural and Biological Engineering, Beijing, China, v. 3, n. 1, p. 26–37, 2010. Disponível em: https://www.ijabe.org/index.php/ijabe/article/view/202. Acesso em: 29 jan. 2026.