Philadelphia, PA, London, UK, June 28, 2011 – Thomson Reuters today announced the release of the 2010 Journal Citation Reports® (JCR), the world’s most influential source of information about highly-cited, peer reviewed publications and the source of the new Journal Impact Factors.
The 2010 release features the largest ever JCR with 10,196 journal listings in 238 disciplines of Science and Social Sciences. 2,494 publishers from 84 countries are represented, some for the first time. A total of 1,075 journals receive their first Journal Impact Factor in the latest JCR release.
Through the Thomson Reuters Regional Content Expansion project, an ambitious multi-year initiative that began in 2006, Thomson Reuters has successfully added 1,355 journals with a regional focus in 84 countries – 522 of which receive a Journal Impact Factor for the first time.
The 2010 release features the largest ever JCR with 10,196 journal listings in 238 disciplines of Science and Social Sciences. 2,494 publishers from 84 countries are represented, some for the first time. A total of 1,075 journals receive their first Journal Impact Factor in the latest JCR release.
Through the Thomson Reuters Regional Content Expansion project, an ambitious multi-year initiative that began in 2006, Thomson Reuters has successfully added 1,355 journals with a regional focus in 84 countries – 522 of which receive a Journal Impact Factor for the first time.

jcr-2010.xls |