1. LeeR.AssanteM.ConwayT.: ‘Analysis of the cyber attack on the Ukrainian power grid’ Technical report 2016
2. Department for Homeland Security: ‘Cyber‐attack against Ukrainian critical infrastructure | ICS‐CERT’ Technical report ICS‐CERT 2016
3. Department of Homeland Security: ‘Presidential Policy Directive 21 (PPD‐21): critical infrastructure security and resilience’ Technical report Department of Homeland Security 2014
4. Department of Defense: ‘Department of defense directive 3100: space policy’ Technical report Department of Defense 2016
5. Preparing for the big one [supply chain management];Sheffi Y.;Manuf. Eng.,2005