NATHAN, S K; SINGH, B; THAKUR, T C. Laboratory studies on performance of positive feed metering devices for band placement of fertilizers. Journal of Agricultural Engineering, India, v. 37, n. 2, 2000. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14075. Acesso em: 6 jun. 2026.