Jabref has a build in support already to handle exactly that situation.
In the adavanced JabRef properties (from Options->Preferences)
the remote operation can be activated so the first running instance of jabref
listens on a port ( default 6050) for further instances that can thus pass
informa
Example URL to test:
http://www.nature.com/nature/journal/v445/n7123/full/445014a.html
(see 'export citation' link at right)
(possibly this page is not accessible if you are not within a university
that has a Nature subscription).
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