Long, B. and Esmaeili, G. A. (1985) “Performance of Synthetic and Mineral Lubricants on Single Cylinder Air Cooled Gasoline Engines”, Journal of Agricultural Systems, Technology, and Management, 1(1), pp. 23–27. Available at: https://ticket17180.pkpmisc01.publicknowledgeproject.org/index.php/jastm/article/view/11749 (Accessed: 24 August 2026).