I have what follows:
\documentclass{article}
\begin{filecontents*}{mybib.bib}
@ARTICLE{refconf,
author = {author},
title = {title},
keywords = {conference}}
@ARTICLE{refjour,
author = {author},
title = {title},
keywords = {journal}}
@ARTICLE{ref,
author = {author},
title = {title}}
\end{filecontents*}
\usepackage[style=numeric-comp,backend=biber]{biblatex}
\bibliography{mybib}
\defbibheading{bibempty}{}
\begin{document}
\cite{refjour}, \cite{refconf}, \cite{ref}
\subsection{Personal Conference references}
\printbibliography[keyword=conference,heading=bibempty]
\subsection{Personal Journal references}
\printbibliography[keyword=journal,heading=bibempty]
\subsection{Other references}
\printbibliography[heading=bibempty]
\end{document}
which is not too bad but I need to customize the labels such that \cite{refjour}
yields [j.1] (j. for journal) in the main text as well as in the list of references, and that \cite{refconf}
yields [c.1], and finally \cite{ref}
yields [1].