Airport Collaborative Decision Making (A-CDM) - Community Specification for application under the Single European Sky Interoperability Regulation EC 552/2004 (ETSI EN 303212 V1.1.1 (2010-06))
Data Link Services (DLS) System - Community Specification for application under the Single European Sky Interoperability Regulation EC 552/2004 - Requirements for ground constituents and system testing (ETSI EN 303214 V1.2.1 (2012-04))