Figure 6. Cross-validating the map structure given by 
to journal relationships derived from AAT journal classifications, i.e. matrix 
.
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.