S. D. Billore, A. K. Vyas, and O. P. Joshi, “Effect of integrated nutrient management on productivity, energy-use efficiency and economics of soybean (Glycine max-wheat (Triticum aestivum) cropping system”, Indian J Agri Sci, vol. 75, no. 10, Oct. 2005, Accessed: Oct. 28, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/9186