Figure 3.
Citation performance of articles with or without international collaboration. The figures for more recent years are lower because papers published during this period have had less time to accumulate citations.
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.