P.K. Rai and Kuldeep Singh, S.S. Pal, Pardeep Kumar,. “Effects of Elevated CO2 on SOC Pools under Resource Conservation in a Rice-Wheat System of IGP”. Journal of the Indian Society of Soil Science, vol. 62, no. 3, Dec. 2014, https://epubs.icar.org.in/index.php/JISSS/article/view/45557.