[1] Kronik,D.A.(1976)."History of Science and Technical Periodicals" , Scarecrow.
[2]ScientificJournals,http://en.wikipedia.org/wiki/Scientific_journal, and references therein.
[3]http://admin-apps.webofknowledge.com/JCR/help/h_eigenfact.htm.
[4] http://www.eigenfactor.org/faq.php
[5] For example, Ian (24 April 2012). "Harvard University says it can’t afford journal publishers’ prices". TheGuardian.(http://www.guardian.co.uk/science/2012/apr/24/harvard-university-journal-publishers-prices).
[6] حسین زاده بیرق، مریم (۱۳۹۰). "بیانیه ناشران خصوصی متشکل از انجمن های علمی و دانشگاه ها نشریه نشاء علم سال اول، شماره ۲، صفحات 63- 65سال ۱۳۹۰
[7]E.g. see http://www.guardian.co.uk/science/2012/jun/08/open-access-research-inevitable-nature-editor, by P. Campbell, editor-in-chief of Nature journal.
[8] Butler, D. (2010). Nature 464, 822, http://www.nature.com/news/2010/100407/full/464822a.html
[9] Van Noorden, R. (2012). Nature 486, 302, http://www.nature.com/news/britain-aims-for-broad-openaccess-1.10846