RAI, A K; SIVADASAN, K; MURTY, S N. Electronic Seed Tube Blockage Detector for Tractor Drawn Seed Drill. Journal of Agricultural Engineering, India, v. 40, n. 2, 2003. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14193. Acesso em: 30 jun. 2026.