Regard: DBIS can only be used only in german language, but many databases are accessable in english and also have english search language.
You can find all databases made available to you by the university’s library in the DBIS database information system.
Databases like SpringerLink can help you to find quotable contents (e.g. articles in journals). They trawl through the contents of huge amounts of books, journals and electronic full texts and you can filter the results in line with your topic.
Inside the campus network there is free access to all databases (green and yellow). Log into the external access via VPN before searching, if you work at home office.