Chapterbib and Bibunits
=======================
`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.