Hongthong, Chairat, Somchai Jaiajitsawat, and Somchai Kritpolwiwattana. “Biogas simulation with mixed gas free on metal cutting”. Engineering and Applied Science Research 43 (November 2, 2016): 283–286. accessed September 22, 2026. https://ph01.tci-thaijo.org/index.php/easr/article/view/70213.