1. GNU core utilities. http://www.gnu.org/software/coreutils/ 2003. GNU core utilities. http://www.gnu.org/software/coreutils/ 2003.
2. Google IPv6 Statistics. http://www.google.com/intl/en/ipv6/statistics.html 2015. Google IPv6 Statistics. http://www.google.com/intl/en/ipv6/statistics.html 2015.
3. Sample IPv6 Active WWW Client Address Aggregate Counts Data. http://www.akamai.com/technical-publications/ October 2015. Sample IPv6 Active WWW Client Address Aggregate Counts Data. http://www.akamai.com/technical-publications/ October 2015.
4. State of the Internet: IPv6 Adoption Trends by Country and Network. http://www.stateoftheinternet.com/ipv6 April 2015. State of the Internet: IPv6 Adoption Trends by Country and Network. http://www.stateoftheinternet.com/ipv6 April 2015.
5. T. Aura. Cryptographically Generated Addresses (CGA). IETF RFC 3972 March 2005. T. Aura. Cryptographically Generated Addresses (CGA). IETF RFC 3972 March 2005.