Govind Singh, Alok Kumar, AL. Ramanathan, Anshumali, Kriti Shukla, Bijendra Kumar, Asmaa Naaz, Chandravir Narayan,. 2016. “Phosphorus Fractions in Irrigated and Rainfed Agricultural Soils of Central India”. Journal of the Indian Society of Soil Science 64 (2). https://epubs.icar.org.in/index.php/JISSS/article/view/62534.