23 GPP TS 23.236 V7.0.0. Intra-domain connection of radio access network (RAN) nodes to multiple core network (CN) nodes, 2006
33GPP TS 25.331. Radio resource control (RRC) protocol spectification, 2005
43GPP TS23.236 Intra-domain connection of Radio Access Network ( RAN )nodes to muhiple Core Network (CN)nodes [S/OL]. [2009-10- 11]. http://www.mbeom.erdFeature/ShowArticle.aspx?ID=377.