SINGH, T P; SINGH, Bachchan. Effect of gang speed, ? -ratio and depth of operation on the performance of powered vertical disc plough. Journal of Agricultural Engineering, India, v. 37, n. 1, 2000. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14067. Acesso em: 6 jun. 2026.