The most important databases:
- International Medieval Bibliography
- Bibliographie de Civilisation Médiévale
- MGH-Opac / Monumenta Germaniae Historica
- Regesta Imperii / Akademie der Wissenschaften und der Literatur, Mainz
- Historical Abstracts
- OLC History – Online Contents
- IfZ-OPAC / Institute of Contemporary History
- OLC History – Online Contents
- European history (beta)
- recensio.net — review platform for European historical studies
- Annual Reports on German History
- German Historical Bibliography (beta)
- Virtual German State Bibliography
- recensio.regio – review platform for regional history
- America: History and Life
- Bibliographische Datenbank Historische Grundwissenschaften
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