AHUJA, S S; RIKHI, Pramod; DOGRA, Baldev. Economics of Harvesting and Threshing of Wheat and Paddy in Northern India. Journal of Agricultural Engineering, India, v. 44, n. 2, 2007. Disponível em: https://epubs.icar.org.in/index.php/JAE/article/view/14500. Acesso em: 6 jun. 2026.