Towards usage-based impact metrics: first results from the mesur project.

Johan Bollen Herbert Van de Sompel Marko A. Rodriguez Towards usage-based impact metrics: first results from the mesur project. 231-240 2008 JCDL http://doi.acm.org/10.1145/1378889.1378928 conf/jcdl/2008 db/conf/jcdl/jcdl2008.html#BollenSR08