Impact Factors

  • CAS Science Spotlight

    Free full article access to the most cited and most requested journal articles and patent families in chemistry.


    CrossRef allows the user to move from one article to another at the citation level, regardless of journal or publisher.


    A free gateway to the most highly influential scientists. Includes biographical information (education, faculty and professional posts, society memberships and/or offices, current research interests, and personal web sites) and full listing of publications (journal articles, book or book chapters, presentations at conferences, web sites and other internet resources).

  • ISI Essential Science Indicators

    Offers data for ranking authors, institutions, nations, and journals

  • Journal Citation Reports

    Presents statistical data that provides a systematic, objective way to determine the relative importance of journals within their subject categories

  • The Impact factor and Using the Impact factor
  • Impact factor

    Lecture about the impact factor

  • The Multiple Meanings of Impact Factors
  • The Number That's Devouring Science

    The impact factor, once a simple way to rank scientific journals, has become an unyielding yardstick for hiring, tenure, and grants.