Valerdi, R., Systems Engineering Cost Estimation with COSYSMO, (expected publication in 2015, under contract with John Wiley & Sons).

Valerdi, R. and Liu, K., Parametric Cost Estimation for Human Systems Integration, in The Economics of Human Systems Integration: Valuation of Investments in People’s Training and Education, Safety and Health, and Work Productivity, Rouse, W. B. (Ed.), Wiley, 2010, 125-161.

Valerdi, R., The Constructive Systems Engineering Cost Model (COSYSMO): Quantifying the Costs of Systems Engineering Effort in Complex Systems, VDM Verlag, 2008.