Kommerzielle Bibliographien benachteiligen Open-Access-Publikationen

http://dx.doi.org/10.1002/asi.21569 Nur das Abstract ist kostenfrei einsehbar: We investigate the extent to which open-access (OA) journals and articles in biology, computer science, economics, history, medicine, and psychology are indexed in each of 11 bibliographic databases. We also look for variations in index coverage by journal subject, journal size, publisher type, publisher size, date of first OA issue, region of publication, language of publication, publication fee, and citation impa..