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2. Cockburn, A.: Agile Software Development. Addison Wesley, Reading (2002)
3. Highsmith, J.: Adaptive Software Development: A Collaborative Approach to Managing Complex Systems. Dorset House, New York (2000)
4. Boehm, B., Turner, R.: Observations on Balancing Discipline and Agility. Presented at Agile Development Conference, Salt Lake City, Utah, and (2003), archived at http://agiledevelopmentconference.com/2003/files/P4Paper.pdf
5. Grenning, J.: Using XP in a Big Process Company, article, at http://www.agilealliance.com/articles/articles/XPInABigProcessCompany.pdf