Maybe an own refsection for the bibliography can help?
\documentclass{article}
\usepackage{biblatex}
\usepackage{filecontents}
\begin{filecontents*}{main.bib}
@article{aksin,
author = {Aks{\i}n, {\"O}zge and T{\"u}rkmen, Hayati and Artok, Levent
and {\c{C}}etinkaya, Bekir and Ni, Chaoying and
B{\"u}y{\"u}kg{\"u}ng{\"o}r, Orhan and {\"O}zkal, Erhan},
title = {Effect of immobilization on catalytic characteristics of
saturated {Pd-N}-heterocyclic carbenes in {Mizoroki-Heck}
reactions},
journaltitle = jomch,
date = 2006,
volume = 691,
number = 13,
pages = {3027-3036},
indextitle = {Effect of immobilization on catalytic characteristics},
}
\end{filecontents*}
\usepackage{filecontents}
\begin{filecontents*}{bibliography.bib}
@article{angenendt,
author = {Angenendt, Arnold},
title = {In Honore Salvatoris~-- Vom Sinn und Unsinn der
Patrozinienkunde},
journaltitle = {Revue d'Histoire Eccl{\'e}siastique},
date = 2002,
volume = 97,
pages = {431--456, 791--823},
langid = {german},
indextitle = {In Honore Salvatoris},
shorttitle = {In Honore Salvatoris},
annotation = {A German article in a French journal. Apart from that, a
typical \texttt{article} entry. Note the \texttt{indextitle}
field},
}
\end{filecontents*}
\addbibresource[label=main]{main.bib}
\addbibresource[label=bibliography]{bibliography.bib}
\begin{document}
the main text \cite{aksin}
\printbibliography
\begin{refsection}[bibliography]
\nocite{*}\printbibliography[title=Bibliography]
\end{refsection}
\end{document}
.bibfiles. If references and bibliography differ in another way, you could usekeywords(if the difference is inherent to the.bibentries) or categories (if the difference is linked to the specific document you write). – moewe Jul 11 '19 at 04:56.bibfiles, you'd probably go via automatically addedkeywords: https://tex.stackexchange.com/q/35279/35864 – moewe Jul 11 '19 at 04:58