“Appraisal of the 15 N-isotope dilution and 15 N natural abundance methods for quantifying nitrogen fixation by flood-tolerant green manure legumes”, IJMF, vol. 9, no. 1, pp. 1–5, Apr. 2021, Accessed: Mar. 23, 2026. [Online]. Available: https://ijpp.org/journal/index.php/ijmf/article/view/91