Individual exercise: Pick an article that appears to be particularly useful for your review. Go through the reference section of this article, and look up five references that could be relevant to your literature review. Note them down in a search record.

Assess titles, keywords and abstracts (if available). Then, have a look at the reference sections of at least three papers. Can you identify citations that appear in more than one paper? Which citations seem to connect these papers and why are they important?