Felipe, R. D., Undan, J. R., Evangelista, E. V., and Cruz, J. A. “Isolation and identification of nitrogen-fixing bacteria in the long-term fertility experiment in irrigated lowland rice ecosystem”. International Journal of Agricultural Technology 16, no. 6 (November 15, 2020): 1361–1372. accessed November 17, 2025. https://li04.tci-thaijo.org/index.php/IJAT/article/view/7489.