Binoy Kumar Medhi and Khagen Kurmi, Gayatri Goswami Kandali, Nirupoma Gogoi Barua, Anjali Basumatary,. “Zinc Fractions and Their Availability to Wetland Rice in Acidic Soils of Assam”. Journal of the Indian Society of Soil Science, vol. 64, no. 1, May 2016, https://epubs.icar.org.in/index.php/JISSS/article/view/58736.