23.234: 3GPP system to Wireless Local Area Network (WLAN) interworking; System description

Info Page @ 3GPP
Rel-12
v12.0.0
Rel-11
v11.0.0
Rel-10
v10.0.0
Rel-9
v9.0.0
Rel-8
v8.0.0
Rel-7
v7.7.0
Rel-6
v6.10.0