What does this site offer me?

In addition to reference management systems and research guides, you can make use of various tools in your research to help you find sources or suitable search terms.

Use ...

  • the DOI URL Finder to find the current URL of a DOI document.
  • Thesauri and dictionaries to collect suitable search expressions for a search.
  • Translation services to collect foreign language expressions or to have abstracts translated.
  • Journal information and rankings to identify journals relevant to your topic.
  • Citation databases to see in which documents an interesting document has been cited.


DOI URL Finder

The Digital Object Identifier (DOI) is a permanent and citable identifier for electronic documents, including electronic journal articles. It begins with a "10". There are two ways to access a document using the DOI:

  • In the address bar of your browser, type the DOI directly, preceded by "" (e.g., "").
  • Access the DOI URL Finder and enter the DOI there (e.g., 10.1038/35057062).
    Link: DOI URL Finder
Citation Databases
  • Citation databases record the publications in which a publication has been cited. They can be used to go from one literature source to other sources (keyword: "forward chaining").

  • CiteSeerX (search engine)
    citation database integrated via "cited by" function

  • Google Scholar (search engine)
    citation database integrated via "cited by" function
Journal Information and Ratings
  • Journals are the most common means of publishing research results in many disciplines. Knowledge of a discipline's journals and their status can therefore be of great benefit for research.
  • Elektronische Zeitschriftenbibliothek EZB
    University of Regensburg: bibliographic database of scientific full-text journals
  • SCImago Journal & Country Rank
    Research Group SCImago: Freely accessible portal with journal and country rankings
  • VHB Jourqual
    German Academic Association for Business Research: Ratings of economic journals
Thesauri and Dictionaries
  • Thesauri are directories of technical terms and their relationships to each other (synonyms, generic/subordinate terms, etc.). They can be used to collect search terms for a search.
  • EU Vocabularies
    offers three thesauri: Digital Europa Thesaurus, ECLAS and EuroVoc
  • OGND
    Online access to the Gemeinsame Normdatei GND (GND is maintained by the German National Library, among others)
  • Semantic Network Service SNS (UMTHES)
    is based on the vocabulary of the environmental thesaurus UMTHES
  • Standard Thesaurus Economics
    also integrated in the research portal EconBiz and the database wiso
  • TEMA - Technik und Management
    Database with technology thesaurus (use via campus network or VPN)
  • Wikipedia
    not suitable as a scientific source of justification, but as a supplier of search terms and literature references
  • wiso Database
    offers four thesauri: Standard Thesaurus Economics, Thesaurus Social Sciences, DZI Thesaurus Social Work, Thesaurus Psychology (use via Campus-Net or VPN)
  • Wortschatz-Portal
    Vocabulary from over 30 million sentences of German-language newspaper text
Translation Services
  • Bing Translator
    Microsoft online service that translates words, texts and entire web pages.
  • DeepL Translator
    Online service of DeepL GmbH, which translates words, texts and entire web pages.
    Multilingual online foreign language dictionary. Offers language recordings, translation forum, and vocabulary trainer, among other features.
  • Google Translator
    Google online service that translates words, texts and web pages. Tip: To have entire pages translated, enter the web address in the left window.
  • Linguee
    Multilingual online foreign language dictionary linked to a search engine that shows searched words in sentence context.
  • Link Everything Online LEO
    Multilingual online foreign language dictionary with discussion forums and language trainer.

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