Social Science Research Network Working Paper Series (29 January 2008)
Scientometrics, Vol. 50, No. 1. (26 January 2001), pp. 59-63.
Scientometrics, Vol. 51, No. 1. (26 April 2001), pp. 335-346.
Journal of Information Science (3 April 2008), 0165551507086991.
PLoS Biology, Vol. 4, No. 5. (1 May 2006)
J. Cell Biol., Vol. 179, No. 6. (17 December 2007), pp. 1091-1092.
Eur J Gastroenterol Hepatol, Vol. 14, No. 3. (March 2002), pp. 209-211.
CMAJ, Vol. 161, No. 8. (19 October 1999), pp. 979-980.
Nature, Vol. 422, No. 6929. (20 March 2003), pp. 259-261.
Biomedical Digital Libraries, Vol. 2, No. 1. (05 December 2005), 7.
Journal of Documentation, Vol. 59, No. 3. (7 May 2003), pp. 243-277.
(26 Mar 2007)
Scientometrics, Vol. 69, No. 1. (12 April 2006), pp. 131-152.
Nature, Vol. 423, No. 6939. (29 May 2003), pp. 479-479.
(01 October 2004)
Journal of the American Society for Information Science and Technology, Vol. 58, No. 13. (2007), pp. 2105-2125.