DHIMAN, S D, D P NANDAL, HARI OM, and D S MEHLA. 2013. “Productivity and Economic Feasibility of Rice (Oryza Sativa)-Based Cropping Systems in North-Western India”. The Indian Journal of Agricultural Sciences 70 (9). https://epubs.icar.org.in/index.php/IJAgS/article/view/28649.