1. AgileSoftwareDevelopment.com
http://agilesoftwaredevelopment.com/
This is a community website where you can post ideas, comments, or articles around Agile Software Development. Some of them highlight interesting aspects and good evolutions
2. Agile Unified Process
http://www.ambysoft.com/unifiedprocess/agileUP.html
This is Scott Ambler’s homepage. He derived the Agile Unified Process (AUP) from the Rational Unified Process and his website contains extensive of information and details on the Agile Unified Process
3. Ambler S (2002) Agile modeling – effective practices for extreme programming and the unified process. Wiley, New York
4. Beck K, Beedle M, van Bennekum A, Cockburn A, Cunningham W, Fowler M, Grenning J, Highsmith J, Hunt A, Jeffries R, Kern J, Marick B, Martin RC, Mellor S, Schwaber K, Sutherland J, Thomas D. The Agile Manifesto: 2001,
http://agilemanifesto.org/
5. Chrysler Comprehensive Compensation System:
http://calla.ics.uci.edu/histories/ccc/
Here you can find a good summary on the Chrysler Comprehensive Compensation System, including some numbers about its size