Gou, Xunjie, Xinru Xu, Zeshui Xu, and Marinko Skare. 2024. “Circular Economy and Fuzzy Set Theory: A Bibliometric and Systematic Review Based on Industry 4.0 Technologies Perspective”. Technological and Economic Development of Economy 30 (2):489–526. https://doi.org/10.3846/tede.2024.20286.