Gao, Qiangxu, Cai Wen, Guofeng Bai, and Zhenying Zhang. “Design Analysis of CO2 Refrigeration System for Artificial Ice Rinks”. International Journal of Energy 4, no. 1 (February 26, 2024): 16–18. Accessed September 9, 2026. https://drpress.org/ojs/index.php/ije/article/view/17548.