and A.P. Singh, Vipin Kumar, R.K. Prasad, B. Prasad. “Kinetics of Nickel-Fulvate Reaction in Sewage Effluents Irrigated Soils”. Journal of the Indian Society of Soil Science, vol. 62, no. 2, Sept. 2014, https://epubs.icar.org.in/index.php/JISSS/article/view/43554.