Felipe, R. D., Undan, J. R., Evangelista, E. V., and Cruz, J. A. 2020. “Isolation and identification of nitrogen-fixing bacteria in the long-term fertility experiment in irrigated lowland rice ecosystem”. International Journal of Agricultural Technology 16 (6):1361-72. https://li04.tci-thaijo.org/index.php/IJAT/article/view/7489.