{bibunits} is for questions addressing issues related to the use of multiple bibliographies in one document.
bibunits is a package that allows the use of multiple bibliographies in one document. The package provides a mechanism to generate separate bibliographies for different units (chapters, sections or bibunit-environments) of a text. The package separates the citations of each unit of text into a separate file to be processed by bibtex. The global bibliography section produced by LaTeX may also appear in the document and citations can be placed in both the local unit and the global bibliographies at the same time.