wongkaew, P. (1989) “Induction of Systemic Immunization: Another Approach for Plant Disease Control ”, Thai Agricultural Research Journal, 7(1-3), pp. 84–91. available at: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/245061 (accessed: 1 October 2026).