On the relation between the WoS impact factor, the Eigenfactor, the SCImago Journal Rank, the Article Influence Score and the journal h-index

"Four alternatives to the journal Impact Factor (IF) indicator are compared to find out their similarities. Together with the IF, the SCImago Journal Rank indicator (SJR), the EigenfactorTM score, the Article InfluenceTM score and the journal h-index of 77 journals from more than ten fields were collected. Results show that although those indicators are calculated with different methods and even use different databases, they are strongly correlated with the WoS IF and among each other. These findings corroborate results published by several colleagues and show the feasibility of using free alternatives to the Web of Science for evaluating scientific journals."

(source: Rousseau, Ronald and STIMULATE 8 , Group, 2009 [Preprint] / déposé sur E-LIS, 19/07/09)