1. Adler , A. Frank , M. 2012 Response to the Office of Science and Technology Policy's request for information regarding “Public access to peer-reviewed scholarly publications resulting from federally funded research http://www.publishers.org/_attachments/docs/library/01-10-2012%20ostp%20publications%20rfi%20aap-psp%20response%20-%20final.pdf
2. What is open access?
3. The economics of ecology journals;Bergstrom;Frontiers in Ecology and the Environment,2006
4. Free labor for costly journals;Bergstrom;Journal of Economic Perspectives,2001