1. http://www.nytimes.com/2009/01/27/science/27essa.html
2. http://cyber.law.harvard.edu/node/3462
3. http://web.mit.edu/newsoffice/2009/open-access-0320.html
4. http://www.ucl.ac.uk/media/library/OpenAccess
5. http://www.nature.com/authors/editorial_policies/license.html