1. Commission of the European Communities. Communication from the Commission to the Council and the European Parliament: Critical Infrastructure Protection in the Fight Against Terrorism, COM (2004) 702 final, Brussels, October 20 (2004)
2. Akyildiz, I.F., Su, W., Sankarasubramaniam, Y., Cayirci, E.: Wireless sensor networks: a survey. Computer Networks: The International Journal of Computer and Telecommunications Networking 38(4), 393–422 (2002)
3. 2004 US National Plan for Research and Development in Support for CIP, April 8 (2005), retrieved from: http://www.dhs.gov/interweb/assetlibrary/ST_2004_NCIP_RD_PlanFINALApr05.pdf
4. Bopping, D.: CIIP in Australia. In: 1st CI2RCO Critical Information Infrastructure Protection conference, Rome (March 2006)
5. Crossbow Technology, Inc. Wireless Measurement Systems, http://www.xbow.com