Sujira Ayusuk, Sunisa Siripongvutikorn, Paiboon Thummaratwasik, and Worapong Usawakesmanee. 2009. “Effect of Heat Treatment on Antioxidant Properties of Tom-Kha Paste and Herbs/Spices Used in Tom-Kha Paste”. Agriculture and Natural Resources 43 (5). Bangkok, Thailand:306-12. https://li01.tci-thaijo.org/index.php/anres/article/view/244833.