Garcia, João, Arian Semedo, and Bruno Almeida. “Sustainable Refrigeration and HVAC Systems With Natural Fluids: An Energy Efficiency Case Study”. International Journal of Innovative Research and Scientific Studies 8, no. 7 (October 6, 2025): 749–765. Accessed December 5, 2025. https://www.ijirss.com/index.php/ijirss/article/view/10600.