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\begin{thebibliography}{}

\bibitem[\textbf{DF}]{bib:df}
D.S.~Dummit and R.M.~Foote.
\newblock {\em Abstract Algebra} (2nd ed.).
\newblock John Wiley and Sons, 1999.

\bibitem[\textbf{Lee2}]{bib:lee2}
Lee,~J.
\newblock {\em Introduction to Smooth Manifolds}.
\newblock Springer, 2003.

\bibitem[\textbf{Rud}]{bib:rudin}
Rudin,~W.
\newblock {\em Principles of Mathematical Analysis} (3rd ed.).
\newblock McGraw-Hill, 1976.

\end{thebibliography}

