1. Before: what do I want to find?

1.7 Where can I search for it?

1.7.3. Specialist search engines

Specialist search engines (also called vertical search engines) allow for filtering searches according to specific standards. For instance, Google Scholar shows results from the training and academic-related arenas (usually, articles and reviews in PDF format). This guarantees the quality and the relevance of the information found.

Figure 14. Google Scholar, a specialist search engine.

The advantage of vertical search engines lies in the fact that they provide excellent results, because the user has previously defined the topic area.