Rasheed, Abdulqadir H., and Adnan M. Hussein. “Improving the Performance of Split Air Conditioner by Adding Nano Silver to the Compressor Oil”. Journal of Petroleum Research and Studies 11, no. 4 (December 20, 2021): 76-90. Accessed April 3, 2025. https://jprs.gov.iq/index.php/jprs/article/view/564.