Academic Search Engines

Google Scholar

Google Scholar is a search engine specifically designed to retrieve academic literature. Result lists include both free and fee-based content, which usually are full texts. The Google Scholar index contains more than 400 million documents.

Open Google Scholar

Performing a search on Google Scholar functions the same way as a regular Google search at first. Search results can then be filtered by publication date / period. Often, Google Scholar directly links to the website which provides access to retrieved documents.

BASE (Bielefeld Academic Search Engine)

BASE is an academic search engine provided by Bielefeld University. BASE indexes more than 150 million documents of which up to 60% are free of charge full texts. Content indexed by BASE include academic journals, repositories and digital collections.

Open BASE (Bielefeld Academic Search Engine)

BASE offers both a standard and an enhanced search, additionally the BASE index can be browsed in various ways. Search results can be filtered. Furthermore, one's own search history is recorded and can be used to circle back to previous results. Search results' full texts will either be displayed directly after a click on the title or clicking the title will lead to the vendor's page from where the full text can be accessed.

Ingenta Connect

Ingenta Connect is an academic search engine, which indexes more than 5 million journal articles. Some of those are free access.

Open Ingenta Connect

Journal articles on Ingenta Connect can be retrieved via a standard and an advanced search. Additionaly articles can be browsed by subject, journal or publishing house.

Clicking the button "Modify" will open the Advanced Search. Search results can be limited to free access journal articles further down in the advanced search.

Karlsruhe Virtual Catalogue(KVK)

The Karlsruher Virtual Catalogue is a meta-catalogue that allows you to search in multiple catalogues simultaneously, including:

  • The catalogues of all German and German-language library associations
  • International library association catalogues
  • Booksellers’ catalogues
  • Digital media catalogues

Reseach via the Karlsruhe Virtual Catalogue