Journals: do we allow 4/5 letter CODENs? about inspire

[jacquerie]

Whoops, I was wrong in my previous post. The errors (https://sentry.cern.ch/inspire-sentry/inspire-labs-qa/group/601671/events/) were due to the fact that \w doesn't match a dash (https://docs.python.org/2/library/re.html#regular-expression-syntax).

So the only question is for lone 4-letter CODEN.

[aw-bib]

As a bibliographic side note: the official CODEN is 6 alphanumeric characters. The authoritative source would be CASSI However, I fear this is a closed database that could not easily be used to brush up our local information.