1. Do Open Access Articles Have a Greater Research Impact? Working paper;Antelman,2004
2. Do University Site Licenses for Academic Journals Benefit the Scientific Community?;Bergstrom,2001
3. Free Labor for Costly Journals;Bergstrom;Journal of Economic Perspectives,2001
4. Against Intellectual Monopoly;Boldrin,2008
5. Citation Advantage of Open Access Articles;Eysenbach;PLoS Biology,2006