\documentclass[11pt]{article}
\title{Multiple Bibliographies with \texttt{multibib}}
\author{LianTze Lim}
\date{}
\usepackage[resetlabels,labeled]{multibib}
\newcites{Math}{Math Readings}
\newcites{Phys}{Physics Readings}
\begin{document}
\maketitle
\cite{paper1} and \cite{paper2} were published later than \citeMath{paper3}. See also \citePhys{paper4}.
\bibliographystyle{unsrt}
\bibliography{references}
\bibliographystyleMath{unsrt}
\bibliographyMath{refs-etc}
\bibliographystylePhys{unsrt}
\bibliographyPhys{refs-etc}
\end{document}