1. Towards a System of Systems Concepts
2. Cities as systems within systems of cities
3. , U.S. Army Acquisition— the program executive officer perspective, Special Report CMU/SEI-2005-SR-002, March 2005.
4. , Teaching the elephant to dance: Agility meets systems of systems engineering and acquisition, Ground System Architectures Workshop (GSAW) Keynote Address, March 2005, http://sunset.usc.edu/GSAW/gsaw2005/s10/boehm.pdf