Jul 02 2009
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“Fig. 1. Distribution of online journal availability in ISI-FSO data through (A) commercial subscription and (B) free through journal Web site. “Hot” regions of the graph correspond to journal issues just a few years behind the years in which they are available online, e.g., in 2003, more journals were commercially and freely available from 1999—about 1000 and 500, respectively—than from any other year. The figure highlights how journal issues increasingly came online from the 1940s, ’50s, and ’60s in 2004 and 2005. [View Larger Version of this Image (121K JPEG file)]”
