Khomkaew, S., N. Suksabai, and S. Kaewpoung. “Study of Performance of Small Engine Running Continuously Compared to TIS 787-2551 Standards”. Srinakharinwirot University Engineering Journal, vol. 20, no. 1, Dec. 2024, pp. 23-30, https://ph02.tci-thaijo.org/index.php/sej/article/view/251968.