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\section{References}  \begin{thebibliography}{9}  \bibitem{latexcompanion}   Michel Goossens, Frank Mittelbach, \begin{thebibliography}  \bibitem{sensitivity}   Patrick C. Crane  and Alexander Samarin.   \textit{The \LaTeX\ Companion}.   Addison-Wesley, Reading, Massachusetts, 1993. Peter J. Napier, 1989 in  \textit{Synthesis Imaging in Radio Astronomy}.   eds. R. A. Perley, F. R. Schawb, & A. H. Bridle (San Francisco: ASP), 139-167.    \bibitem{einstein}   Albert Einstein.  
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