1. Internet Engineering Task Force Handover keying working group (hokey wg) http://www.ietf.org/html.charters/hokey-charter.html
2. 3rd Generation Partnership Project (3GPP) http://www.3gpp.org/
3. Institute of Electrical and Electronics Engineers IEEE 802.21/D8.0 Draft Standard for Local and Metropolitan Area Networks: Media Independent Handover Services 2007
4. Ali AS Authentication and Key Management in Heterogeneous Wireless Networks 2010
5. A formally verified AKA protocol for vertical handover in heterogeneous environments using Casper/FDR;Aiash;EURASIP Journal on Wireless Communications and Networking,2012