A.-K. MOHAMMED, Abdul-Halim; K. HUSSAIN, Hussain; J. SADIQ, Rafal. The Effect of Solvent Extraction of Light Lubricating Oil on Viscosity Index and Chemical Composition. Iraqi Journal of Chemical and Petroleum Engineering, Baghdad, Iraq., v. 8, n. 4, p. 1–12, 2007. DOI: 10.31699/IJCPE.2007.4.1. Disponível em: https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/490.. Acesso em: 18 may. 2024.