Paenpong, C. . and Pratoomchai, N. . (2020) “Performance evaluation of a small spark-ignited engine with an electromagnetic intake valve ”, Journal of Research and Applications in Mechanical Engineering, 9(1), pp. JRAME–21. available at: https://ph01.tci-thaijo.org/index.php/jrame/article/view/240996 (accessed: 12 May 2025).