January 2006
Internet-Draft : "duri" and "tdb" URN namespaces based on dated URIs - L. Masinter, Adobe Systems - April 17, 2004 - Expires: October 16, 2004
"The first namespace ("duri") is used to refer to URI-identified resources as they appeared at a particular time. The second namespace ("tdb") is useful as a way of creating URNs that refer to physical objects or even abstractions that are not themselves
November 2005
RFC 3303 (Informational) : Report from the Joint W3C/IETF URI Planning Interest Group: Uniform Resource Identifiers (URIs), URLs, and Uniform Resource Names (URNs): Clarifications and Recommendations - M. Mealling, Ed., R. Denenberg, Ed.,
"This document addresses how URI space is partitioned and the relationship between URIs, URLs, and URNs, describes how URI schemes and URN namespaces ids are registered, and presents recommendations for continued work on this subject".
June 2005
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