Sutheerasak E, Pirompugd W, Sanitjai S. Performance and emissions characteristics of a direct injection diesel engine from compressing producer gas in a dual fuel mode. Eng Appl Sci Res [internet]. 2018 Feb. 28 [cited 2026 Aug. 27];45(1):47-55. available from: https://ph01.tci-thaijo.org/index.php/easr/article/view/75440