Zhigang, F., Zhiqiang, Z. and Hao, L. (2025) “The transfer characteristics of the world technological activities center countries: The perspective of patent big data analysis: 世界技术活动中心国家转移特征研究—基于专利大数据分析视角”, Studies in Science of Science, 43(7), pp. 502–515. Available at: https://casscience.cn/siss/article/view/93 (Accessed: 23 January 2026).