D. Mukhopadhyay and A. Patra, N. S. G. B. (2021). Release of Non-Exchangeable Potassium in Some Acidic Terai Soils of Himalayan Floodplain. Journal of the Indian Society of Soil Science, 68(3). https://epubs.icar.org.in/index.php/JISSS/article/view/109337