Usage Bibliometrics
  Scholarly usage data provides unique opportunities to address the known shortcomings of citation analysis. However, the collection, processing and analysis of usage data remains an area of active research. This article provides a review of the state-of-the-art in usage-based informetric, i.e. the use of usage data to study the scholarly process. 
Michael J. Kurtz and Johan Bollen
cs.DL astro-ph.IM cs.IR physics.soc-ph