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.
Top-ten countries with publications.
| Countries/regions | Publications | Centrality |
|---|---|---|
| United State | 1,504 | 0.29 |
| Germany | 451 | 0.33 |
| England | 380 | 0.09 |
| Australia | 375 | 0.02 |
| Canada | 308 | 0.06 |
| Italy | 232 | 0.09 |
| France | 188 | 0.06 |
| Brazil | 174 | 0.03 |
| China | 169 | 0.01 |
| Netherlands | 151 | 0.08 |
