Mishra, V K, and R Saha. “Soil Physical Behaviour and Rice (Oryza Sativa) Yield under Different Sources of Organics, Methods of Puddling and Zero Tillage”. The Indian Journal of Agricultural Sciences, vol. 78, no. 5, May 2008, https://epubs.icar.org.in/index.php/IJAgS/article/view/9784.