21.201: Technical Specifications and Technical Reports for an Evolved Packet System (EPS) based 3GPP system

Info Page @ 3GPP
Rel-12
v12.0.0
Rel-11
v11.2.0
v11.1.0
Rel-10
v10.4.0
Rel-9
v9.2.0
Rel-8
v8.5.0