🚀 go-pugleaf

Hi all,

    I wonder if there is a way to do this ...

    Say there are two bibliographical databases called hf.bib and
pulay.bib (there could be many more, but the idea should be the
same). Now I would like to include all the entries in hf.bib at
one place, and all the entries of pulay.bib at another place of
my very long document (a sort of a book). I tried eplain within
TeX, and also LaTeX, and I used a style file aip.bst (American
Institute of Physics). Eplain with plain TeX is my prefered
environment.  

    Failing that, is there is way to force the numbering of
citations to restart from 1 at some point? 

    Any pointer and/or help is appreciated.

Mingzuo Shen