ITU-T X.509-2012 Information technology – Open Systems Interconnection – The Directory: Public-key and attribute certificate frameworks (Study Group 17)
ITU-T X.690-2008 Information technology ASN.1 encoding rules: Specification of Basic Encoding Rules (BER) Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) Study Group 17*, 2023-12-21 Update
IEC 62541-6:2015 history
0000 IEC 62541-6:2020 RLV
2015IEC 62541-6:2015 OPC Unified Architecture - Part 6: Mappings
2011IEC 62541-6:2011 OPC Unified Architecture - Part 6: Mappings