1. ISO/IEC/IEEE International Standard -- Systems and software engineering -- System of systems (SoS) considerations in life cycle stages of a system;ISO/IEC/IEEE 21839:2019(E),2019
2. ISO/IEC/IEEE International Standard - Systems and software engineering -- Guidelines for the utilization of ISO/IEC/IEEE 15288 in the context of system of systems (S0S);ISO/IEC/IEEE 21840:2019(E),2019
3. ISO/IEC/IEEE International Standard - Systems and software engineering -- Taxonomy of systems of systems;ISO/IEC/IEEE 21841:2019(E),2019
4. Architecting principles for systems-of-systems