Unpaywall is a Chrome/Firefox app that can help you find legal, open access copies of scholarly articles, that are freely available to anyone. When you're on a paywalled article, you'll see a lock icon over to the right of the article.
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A open access copy of this article, either a preprint or version that's been accepted, is freely available on this site or elsewhere, like an institutional repository. Click the green lock to get the article. |
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A free/open access version of this article couldn't be found. |