reftex: Chapterbib and Bibunits
4.4 Chapterbib and Bibunits
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‘chapterbib’ and ‘bibunits’ are two LaTeX packages which produce
multiple bibliographies in a document. This is no problem for RefTeX as
long as all bibliographies use the same BibTeX database files. If they
do not, it is best to have each document part in a separate file (as it
is required for ‘chapterbib’ anyway). Then RefTeX will still scan the
locally relevant databases correctly. If you have multiple
bibliographies within a _single file_, this may or may not be the case.