Sarma, D, et al. “Effect of Residual Organics: And Tillage Levels on Wheat (Triticum Aestivum) in a Rice (Oryza Sativa) -Wheat Sequence*”. The Indian Journal of Agricultural Sciences, vol. 75, no. 10, Oct. 2005, https://epubs.icar.org.in/index.php/IJAgS/article/view/9194.