X.680: ITU-T Recommendation X.680 (2002) | ISO/IEC 8824-1:2002
Information Technology - Abstract Syntax Notation One (ASN.1):
Specification of Basic Notation

X.681: ITU-T Recommendation X.681 (2002) | ISO/IEC 8824-2:2002
Information Technology - Abstract Syntax Notation One (ASN.1):
Information Object Specification

X.682: ITU-T Recommendation X.682 (2002) | ISO/IEC 8824-3:2002
Information Technology - Abstract Syntax Notation One (ASN.1):
Constraint Specification

X.683: ITU-T Recommendation X.683 (2002) | ISO/IEC 8824-4:2002
Information Technology - Abstract Syntax Notation One (ASN.1):
Parameterization of ASN.1 Specifications

X.690: ITU-T Recommendation X.690 (2002) | ISO/IEC 8825-1:2002
Information Technology - ASN.1 Encoding Rules:
Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER)
and Distinguished Encoding Rules (DER)

X.691: ITU-T Recommendation X.691 (2002) | ISO/IEC 8825-2:2002
Information Technology - ASN.1 Encoding Rules:
Specification of Packed Encoding Rules (PER)

X.693: ITU-T Recommendation X.693 (2001) | ISO/IEC 8825-4:2002
Information Technology - ASN.1 Encoding Rules:
XML Encoding Rules (XER)

X.694: ITU-T Recommendation X.694 (01/2004) | ISO/IEC 8825-5 : 2004
Information Technology - ASN.1 Encoding Rules:
Mapping W3C XML schema definitions into ASN.1

W3C Recommendation (2 May 2001)
XML Schema part 1 and part 2
http://www.w3.org/TR/2001/REC-xmlschema-1-20010502
http://www.w3.org/TR/2001/REC-xmlschema-2-20010502

W3C Recommendation (6 October 2000)
Extensible Markup Language (XML) 1.0 (Second Edition)
http://www.w3.org/TR/2000/REC-xml-20001006

X.690/Amd.1: ITU-T Recommendation X.690 (07/2002)/Amd.1(10/2003) | ISO/IEC 8825-1:2002/Amd 1:2004
Information Technology - ASN.1 Encoding Rules:
Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER)
and Distinguished Encoding Rules (DER)
Amendment 1 : Support for EXTENDED-XER

X.691/Amd.1: ITU-T Recommendation X.691 (07/2002) )/Amd.1(10/2003) | ISO/IEC 8825-2:2002/Amd 1:2004
Information Technology - ASN.1 Encoding Rules:
Specification of Packed Encoding Rules (PER)
Amendment 1 : Support for EXTENDED-XER

X.693/Amd.1: ITU-T Recommendation X.693 (12/2001)/Amd.1(10/2003) | ISO/IEC 8825-4:2002/Amd 1:2004
Information Technology - ASN.1 Encoding Rules:
XML Encoding Rules (XER)
Amendment 1 : XER encoding instructions and EXTENDED-XER