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\begin{document}

\paragraph{}
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\begin{thebibliography}{2}
 \bibitem {cite1}    Name, Name, Journal {\bf vol}, page (year).

 \bibitem {cite1}    Name, Name, Journal {\bf vol}, page (year).
\end{thebibliography}

\paragraph{}
Acknowledgement an so on. 

\end{document}