LaTeX: bibliography per chapter

some time ago i've quickly jotted down some notes on chapterbib. do they help you?

http://wiki.davidhaberthuer.ch/latex#chapterbib

That one is a TeX FAQ item:

A separate bibliography for each “chapter” of a document can be provided with the package chapterbib (which comes with a bunch of other good bibliographic things). The package allows you a different bibliography for each \included file (i.e., despite the package’s name, the availability of bibliographies is related to the component source files of the document rather than to the chapters that logically structure the document). [...]