1. Bosch S Henderson K, Steps Down the Evolutionary Road: Periodicals Price Survey 2014, Library Journal, 2014, 139(7), 32–37.
2. Suber P, A Very Brief Introduction to Open Access: http://legacy.earlham.edu/∼peters/fos/brief.htm (accessed 18 April 2014)
3. Young P, The Serials Crisis and Open Access: A White Paper for the Virginia Tech Commission on Research. Study on behalf of Virginia Polytechnic and State University, 2009, Blacksburg, Virginia Tech.
4. Scholarly Publishing and Academic Resources Coalition: http://sparc.arl.org/issues/open-access (accessed 18 April 2014)
5. Jisc: http://www.jisc.ac.uk/whatwedo/topics/opentechnologies/openaccess/green-gold.aspx (accessed 18 April 2014)