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4. Wertz, James Richard. and Larson, Wiley J. Space mission analysis and design /edited by James R. Wertz and Wiley J. Larson Kluwer Academic, Dordrecht; Boston: 1991.
5. Ross, A.M., Managing Unarticulated Value: Changeability in Multi-Attribute Tradespace Exploration, Doctor of Philosophy Dissertation, Engineering Systems Division, MIT, June 2006.