Choonluchanon, S. (1991) “Effect of Blue Green Algae on Yield of RD 23 rice ”, Thai Agricultural Research Journal, 9(1), pp. 11–16. available at: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/242201 (accessed: 1 October 2026).