T. C. Thakur, Tapan Kumar Khura, Raj Kishor, and S.J. Amdekar. “Economics of Custom Hiring of Combine Harvesters in North-Western Indo-Gangetic Plains of India - A Case Study”. Journal of Agricultural Engineering (India) 41, no. 4 (December 31, 2004): 27–31. Accessed June 4, 2026. https://pub.isae.in/index.php/jae/article/view/3600.