I recently had a paper accepted by a journal. When I looked it up on the AMS’ Mathematical Reviews, I noticed that it was previously indexed by the service but, at present, is it not. The journal is not pay-for-play, and one of the previous editors was a very famous mathematician.
I asked the handling editor about this and this person informed me that the journal could not “ensure regular periodicity over the year”. This person also informed me that the journal was removed by zbMATH.
- What possible reasons are there that a journal is removed by an indexing service?
- Is it necessarily a sign of (lack of) quality that a journal is removed by an indexing service?