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2. B.B.C. News, 1995, Earthquake devastates Kobe (news.bbc.co.uk/onthisday/hi/dates/stories/january/17/newsid_3375000/3375733.stm), January 17, 1995.
3. SBWire, July 2012 Power blackout in Northern India, 〈www.sbwire.com/press-releases/july-2012-power-blackout-in-northern-india-newreport-175721.htm〉, October 31, 2012.
4. Critical infrastructure protection;George;Int. J. Crit. Infrastruct. Prot.,2008
5. Federal Office for Information Security, Cyber Security Strategy for Germany, Berlin, Germany, 〈www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/CyberSecurity/Cyber_Security_Strategy_for_Germany.pdf?_blob=publicationFile〉, 2011.