Researchers may share articles between themselves if this is permitted by agreements with their publishers, the so-called ‘scholarly sharing.’ Please refer to  Sherpa/Romeo External check current terms for the journal in question. When using the plug-in Open Access Button External link. and hitting paywalled articles, requests to authors are sent asking them to deposit their articles in an open institutional or subject repository. There are also a number of social platforms for researchers, e.g. ResearchGate External link. and External link..