Competitors to Science Citation Index
For those who are looking for new ways to find cited references, Dana Roth (California Institute of Technology Library System) has researched and written an excellent article entitled "The Emergence of Competitors to Science Citation Index and the Web of Science. It appeared in Current Science 89 (9): 1531-1536, November 2005. Resources coverd include SciFinder Scholar, Scopus, Scitation/Spin Web, PROLA, CiteSeer, ScienceDirect, PsychINFO, and Institute of Physics.