
%% ================================================================
\begin{thebibliography}{}

\bibitem[\textbf{CB}]{bib:cb}
Churchill,~R.V. and Brown,~J.W.
\newblock {\em Complex Variables and Applications} (5th ed.).
\newblock McGraw-Hill, 1990.

\bibitem[\textbf{Wik}]{bib:wik}
\newblock Articles on \emph{holomorphic} and \emph{non-analytic smooth function}.
\newblock \hyperlink
{http://en.wikipedia.org}
{http://en.wikipedia.org}.

\end{thebibliography}

