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2. UNESCO: Education for all. http://goo.gl/L8phCw (2015)
3. UNESCO: Forum on the impact of open courseware for higher education in developing countries: final report. http://goo.gl/26HSvR (2002)
4. Atkins, D.E., Brown, J.S., Hammond, A.L.: A review of the Open Educational Resources (OER) movement: achievements, challenges, and new opportunities. The William and Flora Hewlett Foundation, Menlo Park (2007)
5. Cape Town Meeting: Cape Town Open Education Declaration: unlocking the promise of open educational resources (2007)