“Appraisal of the 15 N-Isotope Dilution and 15 N Natural Abundance Methods for Quantifying Nitrogen Fixation by Flood-Tolerant Green Manure Legumes”. International Journal of Manures and Fertilizers 9, no. 1 (April 29, 2021): 1–5. Accessed March 26, 2026. https://ijpp.org/journal/index.php/ijmf/article/view/91.