\documentclass{article}
\providecommand{\prl}{Phys. Rev. Lett.}

\begin{document}

This file demonstrates the citekey styles that \texttt{bibsync} can resolve
through NASA ADS:
\begin{itemize}
  \item an arXiv ID: \cite{1602.03837}
  \item a DOI: \cite{10.1103/PhysRevLett.116.061102}
  \item an ADS bibcode: \cite{2016PhRvL.116f1102A}
\end{itemize}

\bibliography{main}
\bibliographystyle{unsrt}

\end{document}
