1. MIT Technology Review Texting “SOS” to 911 , August 2011 http://www.technologyreview.com/news/425079/texting-sos-to-911/
2. PCMag.com 112 Day: 74% of Europeans Don't Know What Emergency Number to Call When Travelling in the EU. New Campaign , February 2012 http://ec.europa.eu/commission_2010-2014/kallas/headlines/news/2012/02/112_day_en.htm
3. PCMag.com Verizon First to Offer National Text-to-911 Service , May 2012 http://www.pcmag.com/article2/0,2817,2404036,00.asp
4. IETF The Tao of IETF: A Novice's Guide to the Internet Engineering Task Force , October 2011 http://www.ietf.org/tao.html
5. IETF 61st IETF Meeting, Washington, DC USA: Emergency Context Resolution With Internet Technologies (ECRIT) BOF , November 2004 http://www.ietf.org/proceedings/61/ecrit.html