Top 20 Countries in ALL FIELDS

Top 20 Countries in ALL FIELDS - (1999-August 31, 2009) Science Watch

For the eighth year, ScienceWatch.com presents its annual "Top 20" listings of the countries which, as of the latest bimonthly update of Essential Science IndicatorsSM, achieved particular distinction based on their papers published in Thomson Reuters-indexed journals from January 1999 through August 31, 2009, a 10-year plus 8-month period. The listings are confined to those nations, out of a pool of 148, which published at least 10,000 papers across all fields during the period. Countries are ranked by three separate measures: total citations, number of papers, and cites per paper. (Note: For articles with multiple authors representing different nations, each listed nation receives full, not fractional, citation credit for the given paper.)