For my bibliography, it is demanded, that I separate books from articles but have a continuous numbering throughout the bibliography. But I'm just not able how to archive the desired formation. Here is my Tex document:
\documentclass[12pt,a4paper]{article}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage[backend=biber,
style=numeric,
]{biblatex}
\addbibresource{sample.bib}
\textwidth138mm
\begin{document}
text \cite{bookAaa} more text \cite{articleAaa}
even more text \cite{bookBbb} ...text \cite{articleBbb}
\printbibheading [title={Bibliography}]
\printbibliography[heading=subbibintoc,type=book,title={books}]
\printbibliography[heading=subbibintoc,type=article,title={articles}]
\end{document}
And this is what my desired formation is:

Thanks for helping!

