Singh, V., Ramdev, R., Sharma, S. K., Siag, R. K., & Verma, B. L. (2012). Economics of legume-wheat (Triticum aestivum) cropping systems under different levels of irrigation. The Indian Journal of Agricultural Sciences, 65(10). https://epubs.icar.org.in/index.php/IJAgS/article/view/19084