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<referencetext xmlns="http://eprints.org/ep2/data/2.0">Science and Engineering Indicators 2004. National Science Foundation, May 04, 2004, Available on-line at: &lt; http://www.nsf.gov/sbe/srs/seind04/ &gt;  (accessed: October 26, 2004).  

ISIHighlyCited.Com, &lt; http://isihighlycited.com/ &gt; (accessed: October 26, 2004).  

Garfield, E.: Citation measures used as an objective estimate of creativity. Current Contents, #26, August 26, 1970 (see also: Garfield, E.: Essays of an Information Scientist, vol. 1, pp.120-121, 1962-73)

Garfield, E.: Citation frequency as a measure of research activity and performance. Current Contents, #5, January 31, 1973 (see also: Garfield, E.: Essays of an Information Scientist, vol. 1, pp. 406-408, 1962-73)

Garfield, E.: Is the ratio between number of citations and publications cited a true constant? Current Contents, #6, February 9, 1976 (see also: Garfield, E.: Essays of an Information Scientist, vol. 2, pp. 419-425, 1974-76)

Garfield, E., and Welljarns-Dorof, A.: Citation data: their use as quantitative indicators for science and technology evaluation and policy-making. Science and Public Policy 19(5):32 1-7, October 1992

Most-Cited Researchers 1983-2002, &lt;http://www.sciencewatch.com/sept-oct2003/sw_sept-oct2003_page2.htm&gt; (accessed: December 8, 2004).</referencetext>
