1. President's Commission on Critical Infrastructure Protection. Critical Foundations: Protecting America's Infrastructures, The White House, Washington, DC, 1997.
2. A. Sarri, K. Moulinos, Stocktaking, Analysis and Recommendations on the Protection of CIIs, ENISA, Heraklion, 2015. doi:10.2824/534303.
3. Act No. 240/2000 Coll. on Crisis Management and on amendments of certain acts (Crisis Act) as amended.
4. National Infrastructure Advisory Council. Critical Infrastructure Resilience Final Report and Recommendations, U.S. Department of Homeland Security, Washington, DC, 2009.
5. Presidential Policy Directive (PPD-21). Critical Infrastructure Security and Resilience, The White House, Washington, DC, 2013.