Fersht A. PNAS 2009;106(17): 6883-6884.
To to rate the influence of journals a new bibliometric parameter, the Eigenfactor(www.eigenfactor.org), has recently been created and is now listed by Journal Citation Reports. The Eigenfactor ranks journals in a manner similar to that used by Google for ranking the importance of Web sites in a search. Practically, there is a strong correlation between Eigenfactors and the total number of citations received by a journal.
New and emerging measures of scientific impact are continuously developed and improved. However, the author wisely warns the scientists against relying solely on one standard measure. After all, science is about progress, which is ultimately assessed by human judgment.