Google Scholar , allows one to find scientific articles on the web.
One of its advantages is the speed and effectiveness that we have come to expect from Google. The results are listed by their relevance, giving priority to the most-cited articles, and at the same time awarding a greater score to the articles cited by those most cited.
One disadvantage is that many publications are not accessible full-text because they require a subscription. It's unlikely that it'll replace academic databases but it is nevertheless an interesting service that's free, and available to everyone.
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