These pages are maintained at the Library of Congress by the Network Development and MARC Standards Office, as part of its participation in the IFLA CDNL Alliance for Digital Standards (ICABS), to provide information relevant to the library community about URIs, identifiers, locators, and related concepts.
Kriterienkatalog zur Prüfung der Vertrauenswürdigkeit von PI - Systemen / Niklaus Bütikofer. nestor-Arbeitsgruppe Standards für Metadaten, Transfer von Objekten in digitale Langzeitarchive und Objektzugriff
System for identifying and exchanging intellectual property in the digital environment; excellent website: especially FAQ section, Glossary of Terms and 169 page DOI Handbook