7Courant, Paul N. Griffiths, Rebecca J.(2006) , Software and Collaboration in Higher Education: A Study of Open Source Software, July 26, http://www.ithaka.org/strategic -services/oss/OOSS_Report_FINAL.pdf(2006-10-2).
8The r-smart group(2004),Open source - opens learning: Why open makes sense for education, www.rsmart.com/assets/ OpenSourceOpensLearningJuly2004.pdf(2006-10-6).
9Hawkins, Brian L. Rudy, Julia A. and Nicolich, Robert (2005). Core Data Service survey: Fiscal Year 2004 Summary Report, September, http://www.educause.edu/cds(2006-3 -28).
