R.S. Khamparia, P.S. Kulhare, G.D. Sharma, B.L. Sharma and. “Direct and Residual Effect of Zn and Organic Manures on Yield, Zn Content and Uptake in a Rice (Oryza Sativa) – Wheat (Triticum Aestivum) Sequence on a Vertisol”. Journal of the Indian Society of Soil Science, vol. 62, no. 3, Dec. 2014, https://epubs.icar.org.in/index.php/JISSS/article/view/45555.