Abolfazl Semnani (2012) “Application Of Icp-Oes In The Comparative Analysis Of A Used And Fresh Gasoline Motor Oil”, Global Journal of Science Frontier Research, 12(B2), pp. 9–14. Available at: https://journalofscience.org/index.php/GJSFR/article/view/412 (Accessed: 30 April 2024).