1. J. Rice. 2011 The group working on UPDM. (28 October 2011). Available: http://www.updm.com/ J. Rice. 2011 The group working on UPDM . (28 October 2011). Available: http://www.updm.com/
2. EuropeanCommission 2009 "Workshop On Systems Of Systems Contribution To ICT Work Programme 2011 " DG INFSO Unit G3 BrusselsSeptember 21st 2009. EuropeanCommission 2009 "Workshop On Systems Of Systems Contribution To ICT Work Programme 2011 " DG INFSO Unit G3 BrusselsSeptember 21st 2009.
3. M. Jamshidi. 2005 System-of-Systems Engineering: A Definition. Available: http://ieeesmc2005.unm.edu/SoSE_Defn.htm M. Jamshidi. 2005 System-of-Systems Engineering: A Definition . Available: http://ieeesmc2005.unm.edu/SoSE_Defn.htm