\documentclass[a4paper,12pt]{article}

\usepackage[mincrossrefs=5,bibtex8]{biblatex}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
% \usepackage{csquotes}
\usepackage[ngerman]{babel}
 
\bibliography{biblatexreqlines}
\begin{document}

\section{First}

\begin{refsection}
Test \cite{Scherzer1936}
\end{refsection}


\section{Second}

\begin{refsection}
Test \cite{Scherzer1936}
\end{refsection}

\printbibliography[section=1]
\printbibliography[section=2]
\end{document}
