A.K. Dwivedi, S. Panwar and R.K. Thakur, A. Khandagle*, B.S. Dwivedi,. 2020. “Nitrogen Fractions under Long-Term Fertilizer and Manure Applications in Soybean-Wheat Rotation in a Vertisol”. Journal of the Indian Society of Soil Science 68 (2). https://epubs.icar.org.in/index.php/JISSS/article/view/106432.