Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) The network of co-cited references. (B) The network of co-cited references clusters. Cluster size in graph (A) indicates the number of citations, reflecting the degree of attention the clusters have received. The size of the nodes in the graph (B) reflects the centrality of the article, centrality depicts the node establishing a bridge between 2 unrelated nodes, with a high mediated centrality highlighting the importance of the node in the knowledge structure.
