23GPP TS 23.401 General Packet Radio Service (GPRS)enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN ) access [S/OL]. [2013-02- 11 ]. http://www.docin.com/p- 193879730. html.
33GPP TS 23.060 General Packet Radio Service (GPRS) ;Service de- scription [S/OL]. [2013-02-11 ]. http://www.doein.com/p-73115878. html.
