Kwesi Gafrey, Calvin, Robert Wilson, George Amoako, and Benjamin Anderson. “Laser-Induced Fluorescence With Multivariate Analysis in Characterizing Crude Oils from Some Selected Oil Fields in Ghana”. Physical Science International Journal 25, no. 6 (October 9, 2021): 8-20. Accessed November 29, 2021. https://journalpsij.com/index.php/PSIJ/article/view/30262.