Defining SoS requirements: an early glimpse at a methodology. - Randy G. Walker; Charles B. Keating (Int. J. Syst. Syst. Eng., 2012)

A method to define SoS requirements. - Randy G. Walker; Charles B. Keating; Adrian V. Gheorghe; Resit Unal; James C. Pyne (Int. J. Syst. Syst. Eng., 2014)