Where to search?
References to journal articles, books, reports and other documents are stored in bibliographic databases. Many of the references include abstracts and links to the article in full text.
Library catalogues are a type of databases that shows which literature exists at one or more libraries, e.g. the Copenhagen University Libraries catalogue REX (including the LIFE Library). Using REX, you can look up and search books, journals, bibliographic databases etc. You can also search for articles in REX.
Databases have different limitations:
Some are limited to one subject, while others cover several subject areas
This means that searching in one database isn't always enough. You might have to use several databases to make sure your search covers all necessary aspects.
Several factors determine which databases you ought to use:
The topic you want information about
The amount of information you need
How up-to-date/recent information you need