Chen, Yingwen, Rui Yang, Christina W. Y. Wong, and Xin Miao. “Environmental Performance of China’s Economic System: Integrative Perspective of Efficiency and Productivity”. Technological and Economic Development of Economy 28, no. 3 (April 22, 2022): 743–774. Accessed November 23, 2024. https://jau.vgtu.lt/index.php/TEDE/article/view/16594.