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Citespace reference co-citation analysis network (Cluster View) in CSCs research from 1997 to 2021. The network has a modularity of 0.7239 and an average silhouette score of 0.8819. The labels of each cluster are exhibited beside the blocks. The color of the clusters shows when the co-citation links happened. The yellow color means the citing year is relatively early, and the red color indicates that the citation time is relatively recent.
