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) Top 20 scientific institutions ranked by the number of articles they have supported in the 21st century. (B) Top 20 authors ranked by h-index in the 21st century, with a minimum threshold of 17. (C) Collaboration map. The size of the node represents the number of collaboration works the authors have with others, the thickness of the line connecting two authors represents the number of collaboration works between them.
