DAHAB, Mohamed Hassan; BALAL, Moayed Mohamed. Computer programming for prediction of soil bulk density effect on trencher design parameters. International Journal of Agricultural and Biological Engineering, Beijing, China, v. 4, n. 4, p. 42–49, 2012. Disponível em: https://ijabe.org/index.php/ijabe/article/view/544. Acesso em: 1 apr. 2026.