Here is a short, helpful article on conducting internet research on secondary sources. Gijs Van Dijck, How to Conduct Legal Academic Research When Relying on Internet Sources? What makes it stand out is that it offers a methodology. Worth passing on to your students. Here is the article’s conclusion:
This paper discusses how to identify and select relevant publications when mainly relying on Internet sources. It is argued that an effective search strategy relies on a combination of three techniques: identifying relevant experts, reference tracking (or snowballing), and conducting an independent literature search. Google Scholar, Google Books, SSRN, ResearchGate, and Academia.edu are search engines or databases that can or do provide for academic publications without charge. However, one may need to narrow-down the search results. Several heuristics are available to make such a selection without having to read every single publication. These heuristics include looking at publication ranking, publication recency (in what year was the publication published?), publication outlet, author status, and article length. However, heuristics cannot replace reading. In the end, it is about content.
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