ZHAOYANG, Chen; LEI, Shi. Development and test of an automatic height-adjusting cotton topper. International Journal of Agricultural and Biological Engineering, Beijing, China, v. 10, n. 2, p. 44–55, 2017. Disponível em: https://ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/2492. Acesso em: 3 aug. 2026.