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Solomon, David J.; Björk, Bo-Christer (August 2012). "A study of open access journals using article processing charges". Journal of the American Society for Information Science and Technology. 63 (8): 1485–1495. CiteSeerX10.1.1.414.6299. doi:10.1002/asi.22673.
Scheiding, Tom (2009). "Paying for Knowledge One Page at a Time: The Author Fee in Physics in Twentieth-Century America". Historical Studies in the Natural Sciences. 39 (2). University of California Press: 219–247. doi:10.1525/hsns.2009.39.2.219. ISSN1939-1811.