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Spec	Title	Releases	WG
36.413	Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)	18.2.0 17.6.0 16.14.0 15.11.0 14.9.0 13.8.0 12.7.0 11.8.0 10.9.0 9.10.0 8.10.0	R3

All information on this page is aggregated from the 3GPP Specfication Status Report page.