You have to decide which databases you will use in your literature search. To limit location bias, you have to use more than one database. Make an informed choice! In this module we list some database features you can take into account.
There are different types of literature databases:
The Checklist Selecting Databases provides an overview of features you have to take into account when choosing the databases to use for your literature review.
Google Scholar indexes websites with scholarly articles – including websites of academic publishers, university repositories and personal websites of researchers. A major difference between Google Scholar and A&I databases is that Google Scholar doesn’t provide information about the indexed websites or journals. It’s hard to check if a particular journal is indexed cover-to-cover in Google Scholar. Google Scholar gives no definition of ‘scholarly’. Amongst the scholarly results you might get results from predatory publishers and papers written by students.
When you use Google Scholar for a search for your literature review, be aware that it can be hard to perform a structured, repeatable search:
Google Scholar is a great tool for locating articles you know the titles of. In the Scholar settings you can add a Library link to the Erasmus University Library (see the module Get the most out of Google Scholar) then follow the FULL-TEXT @ EUR links to the published version of an article in the EUR Library collection.
TIP: Publish or Perish (also called PoP) is software used for citation analysis, based on Google Scholar citation data. The general citation search in Publish or Perish allows you to perform an Advanced Scholar Search query and analyse its results. The advantage is the presentation of the results: you can sort by author, year, times cited, publication and publisher. The abstract is not shown. It's possible to export the output, for example to Excel.