Panday, S C, R D Singh, Supradip Saha, K P Singh, Ved Prakash, Ajay Kumar, M Kumar, and A K Srivastava. 2008. “Effect of Tillage and Irrigation on Yield, Profitability, Water Productivity and Soil Health in Rice (Oryza Sativa) -Wheat (Triticum Aestivum) Cropping System in North-West Himalayas”. The Indian Journal of Agricultural Sciences 78 (12). https://epubs.icar.org.in/index.php/IJAgS/article/view/9970.