BibTeX and master documents

[John Hughes]

I have just discovered the Insert->File->Child Document option in LyX, which 
is useful for inserting several chapter documents into one master document. 
However, if I use BibTeX references in my chapter documents, they don't 
appear correctly in the master output. The best output I have managed so far 
inserts a bibliography at the end of each chapter but the individual 
bibliographies include all the references from the entire document (i.e. 
from all of the chapters). Is there a way of achieving either individual 
bibliographies that only include the references cited in their own chapters 
or a single bibliography at the end of the master document?

Thanks
John

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