Citation Advantage of Open Access Articles

["Hamaker, Charles" <cahamake@email.uncc.edu>]

Phil Davis has a letter in PLOS Biology in response to 
Eysenbach's original article

"Citation advantage of Open Access articles likely explained by 
quality differential and media effects" (16 January 2007) 
http://biology.plosjournals.org/perlserv/?request=read-response&doi=10.1 
371/journal.pbio.0040157#r1438

"Eysenbach discovered a significant citation advantage for those 
articles made freely-available upon publication ... .....The fact 
that OA articles were more likely to be featured on the front 
cover of PNAS and covered by the media suggests that other causal 
explanations may explain the OA advantage. ..."

Chuck Hamaker
Associate University Librarian Collections and Technical Services
Atkins Library
University of North Carolina Charlotte
Charlotte, NC 28223