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Re:Dozens of scientific journals have vanished from the inte... by ramshorns on Wednesday September 09, 2020 @02:56PM (#24424451)
> The authors defined a vanished journal as one that published at least one complete volume as immediate OA, and less than 50% of its content is now available for free online.

Well, this exact definition could have some false positives, like a journal that publishes every third volume as complete open access and keeps the others behind a paywall. But I'm sure they were a bit more careful than it says here.

Re:Dozens of scientific journals have vanished from the inte... by l_matthia on Wednesday September 09, 2020 @03:13PM (#24424670)
Yes. We checked that all journals were full OA journals (so nothing like the scenario you just described here). So the timeline looked like this: OA journal was actively publishing > then became inactive, but the content on the journal website was still accessible > and eventually the website and the content disappeared/became inaccessible.

In some cases, we found websites (other than the original journal website) that now host some individual issues, but not all of the content.