Retractions vs. fake citations: what's the difference?
They sound similar and both undermine a reference, but they're different problems. A retracted paper is real — it was published, then formally withdrawn. A fake citation never existed at all. Telling them apart matters, because the fix is different.
A retracted citation
The work is genuine and fully indexed — you can find it, resolve its DOI, and read it. But the journal has since retracted it, usually for error or misconduct, so its findings should no longer be relied upon. Citing it as current support is a problem of currency and validity, not existence. The reference is real; its conclusions are not safe to build on.
A fake (hallucinated) citation
There is no underlying work at all — or the identifiers have been swapped so they point somewhere else. Nothing was retracted because nothing was ever published. This is a problem of existence and identity. See what a fake citation is.
How to tell them apart
Search the title and resolve the DOI. If the work shows up in the databases with matching details, it's real — then check whether it carries a retraction notice (services like Retraction Watch track these). If the work doesn't show up at all, or the DOI lands on a different paper, you're looking at a fabrication, not a retraction.
Why both matter
A bibliography can contain either or both, and a thorough check flags each for what it is: a fabrication to remove, or a retracted source to reconsider. Hallucite checks existence and consistency andflags retracted works, so the two failure modes don't get conflated — see how verification works.