| Provider | 
Accesspossibilities | 
temporary/permanent | 
| Academic Complete | 
Access via HU network, VPN | 
temporary | 
| American Institute of Physics (AIP) | 
Access via HU network, VPN, Shibboleth | 
permanent | 
| AMS | 
Access via HU network, VPN | 
permanent | 
| American Psychological Association (APA) | 
Access via HU network, VPN | 
permanent | 
| Aisthesis Verlag | 
Access via HU network, VPN | 
permanent | 
| Akademie | 
Access via HU network, VPN | 
permanent | 
| American Phytopathological Society APS E-Books | 
Access via HU network, VPN | 
permanent | 
| Archaeopress Verlag | 
Access via HU network, VPN | 
temporary | 
| Artstor Digital Library (JSTOR) | 
Access via HU network, VPN | 
temporary | 
|   | 
  | 
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| Beck | 
Access via HU network, VPN | 
temporary and permanent | 
| Beltz | 
Access via HU network, VPN | 
temporary and permanent | 
| Berghahn | 
Access via HU network, VPN | 
permanent | 
| BibliU | 
Access via HU network, VPN, Shibboleth | 
permanent | 
| Bibliothèque Classiques Garnier | 
Access via HU network, VPN | 
permanent | 
| Bloomsbury | 
Access via HU network, VPN | 
permanent | 
| Brill | 
Access via HU network, VPN, Shibboleth | 
temporary and permanent | 
| Böhlau | 
Access via HU network, VPN | 
permanent | 
|   | 
  | 
  | 
| CABI | 
Access via HU network, VPN | 
permanent | 
| Cairn.info | 
Access via HU network, VPN | 
permanent | 
| Cambridge Collections Online | 
Access via HU network, VPN | 
temporary and permanent | 
| Cambridge Core | 
Access via HU network, VPN | 
temporary | 
| Cambridge University Press | 
Access via HU network, VPN | 
temporary | 
| Campus Digitale Bibliothek | 
Access via HU network, VPN | 
permanent | 
| CEEOL | 
Access via HU network, VPN, Shibboleth | 
permanent | 
| Chandos Publishing | 
Access via HU network, VPN | 
permanent | 
| Content Select | 
Access via HU network, VPN, Shibboleth | 
temporary and permanent |