1. 3GPP. 2011. 3GPP System Architecture Evolution (SAE); Security architecture. TS 33.401. http://www.3gpp.org/ftp/Specs/html-info/33401.htm 3GPP. 2011. 3GPP System Architecture Evolution (SAE); Security architecture. TS 33.401. http://www.3gpp.org/ftp/Specs/html-info/33401.htm
2. 3GPP. 2011. Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3. TS 24.301. 3rd Generation Partnership Project (3GPP). http://www.3gpp.org/ftp/Specs/html-info/24301.htm 3GPP. 2011. Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3. TS 24.301. 3rd Generation Partnership Project (3GPP). http://www.3gpp.org/ftp/Specs/html-info/24301.htm
3. 3GPP. 2019. C1-191700 - Handling when the UE indicated security capabilities are invalid or unacceptable. https://portal.3gpp.org/ngppapp/CreateTdoc.aspx?mode=view&contributionUid=C1-191700. {Online; accessed April 8 2019}. 3GPP. 2019. C1-191700 - Handling when the UE indicated security capabilities are invalid or unacceptable. https://portal.3gpp.org/ngppapp/CreateTdoc.aspx?mode=view&contributionUid=C1-191700. {Online; accessed April 8 2019}.
4. 3GPP. 2019. C1-191702 - Handling when the UE indicated security capabilities are invalid or unacceptable. https://portal.3gpp.org/ngppapp/CreateTdoc.aspx?mode=view&contributionUid=C1-191702. {Online; accessed April 8 2019}. 3GPP. 2019. C1-191702 - Handling when the UE indicated security capabilities are invalid or unacceptable. https://portal.3gpp.org/ngppapp/CreateTdoc.aspx?mode=view&contributionUid=C1-191702. {Online; accessed April 8 2019}.
5. New privacy issues in mobile telephony