Ander Ruiz Zardoya, Iñaki Loroño Lucena, Iñigo Oregui Bengoetxea and José A. Orosa (2021) “Review about Emission Reduction in Oil Extraction Using Low Methane Fuels in Natural Gas Combustion Engines”, International Journal of Applied Sciences: Current and Future Research Trends , 12(1), pp. 53–60. Available at: https://ijascfrtjournal.isrra.org/index.php/Applied_Sciences_Journal/article/view/1162 (Accessed: 29 March 2024).