http://leiden.dachs-archive.org/archive/citrep/vancrevel2008/20080921/mclc.osu.edu/rc/pubs/vancrevel4.html http://leiden.dachs-archive.org/archive/citrep/vancrevel2008/20080921/mclc.osu.edu/rc/pubs/vancrevel4.html http://leiden.dachs-archive.org/archive/citrep/vancrevel2008/20080921/mclc.osu.edu/rc/pubs/vancrevel4.html