Open Access Portals
A large number of searchable national and international open access repositories are available. They include University repository holdings (VTS).
Open Access Portals
- BASE - Bielefeld Academic Search Engine (Aggregator für Open Access Dokumente)
- OpenAIRE (Open Access Infrastructure for Research in Europe)
- OAN - Open Access Network: Netzwerk DINI-zertifizierter OA-Repositorien
- OAIster (WorldCat) (Betreiber: OCLC)
- edoc OAI-Suche (Deutschland) (Betreiber: Humboldt Universität Berlin)
- Deutsche Digitale Bibliothek
- Europeana