1. INCOSE, Systems Engineering Handbook: A Guide for System Life Cycle Processes and Activities. version 4.0 ed. 2015, Hoboken, NJ, USA: John Wiley and Sons, Inc.
2. Buede, D.M. and W.D. Miller, The Engineering Design of Systems: Models and Methods. Third edition ed. 2016, Hoboken, NJ, USA: John Wiley & Sons, Inc.
3. Blanchard, B.S. and W.J. Fabrycky, Systems engineering and analysis. Vol. 4. 1990: Prentice Hall New Jersey.
4. Salado, A., R. Nilchiani, and D. Verma, A contribution to the scientific foundations of systems engineering: Solution spaces and requirements. Journal of Systems Science and Systems Engineering, 2017. 26(5): p. 549-589.
5. INCOSE, Guide for writing requirements. 2012, The International Council of Systems Engineering.