System of systems complexity identification and control. - Joseph J. Simpson; Mary J. Simpson (SoSE, 2009)

Secure Software Education: A Contextual Model-Based Approach. - Joseph J. Simpson; Mary J. Simpson; Barbara Endicott-Popovsky; Viatcheslav Popovsky (Int. J. Secur. Softw. Eng., 2010)

Formal, theoretical aspects of systems engineering : Comments on "Principles of Complex Systems for Systems Engineering" [Syst Eng 12 (2009), 295-311]. - Mary J. Simpson; Joseph J. Simpson (Syst. Eng., 2010)

Entropy Metrics for System Identification and Analysis. - Joseph J. Simpson; Mary J. Simpson (Syst. Eng., 2014)