DIAL Specification (Version 2.2.1)
DIAL Specification (Version 2.2)
DIAL Specification (Version 2.1)
DIAL Specification (Version 2.0.1)
DIAL Specification (Version 2.0)
DIAL Specification (Version 1.7.2)
DIAL Specification (Version 1.7.1)
DIAL Specification (Version 1.7)