1. P.A. Jansma, R.M. Jones, Advancing the practice of systems engineering at JPL, in: IEEE Aerospace Conference. IEEEAC-1031 (2006).
2. Market-based approaches for controlling space mission costs: the Cassini resource exchange;Wessen;J. Reduced Mission Oper. Costs,1998
3. Capacity Planning and Resource Pricing for Pioneering Projects. Modelling Uncertainty: An Examination of Stochastic Theory, Models, and Applications;Porter,2000
4. M.E. Gebicke, Space Missions Require Substantially More Funding Than Initially Estimated. GAO/NSAID-93-97. General Accounting Office. Washington D.C. (1992).
5. R.E. Bitten, C.W. Freaner, D.L. Emmons., Using historical NASA cost and schedule growth to set Future Program and Project Reserve Guidelines, in: IEEE Aerospace Conference. IEEEAC-1545 (2006).