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http://digital-textbooks.blogspot.com"DT Is Devoted To Documenting Significant Initiatives That Relate To Any And All Aspects Of Digital Textbooks, Most Notably Their Use In Higher Education"Hier findet man u.a. den Hinweis auf eine Arbeit über Open Textbooks. "examining five open textbook platforms: (1) Wikibooks, (2) Connexions, (3) Flat World Knowledge, (4) The Global Text Project, and (5) Textbook Media. " (August 2009):http://www.lib.ncsu.edu/dspc/opentextbookswhitepaper.pdf