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Here is an article \cite{Witten:1997ep}, and here
another \cite{Li:1996mi}. Then a wrong author: \cite{Nobody:1997aa}
and a wrong label \cite{Cheng:1996hh} with `hh' instead of `hc'.
Then an eprint \cite{hep-th/9703030} and a personal label
\cite{DNS:94} plus a commented out one. % \cite{pippo}.
Then a label with an author whose last name has two words \cite{deWit:1984px}.
Then label with no arxiv specified which will search the default arxiv \cite{0101001}.
Finally, here is an article with the new arxiv numbering \cite{0704.0001}.

Notice this file uses {\sf utphys.bst} as a bibliography style.
Any other style may be used.

This file also uses the package {\sf showkeys} to show the names of the citation keys.

\bibliographystyle{utphys}
\bibliography{example}

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