\begin{thebibliography}{AMO93}

\bibitem[AMO93]{Ahuja1}
R.~K. Ahuja, T.~L. Magnanti, and J.~B. Orlin.
\newblock {\em Network Flows: Theory, Algorithms and Applications}.
\newblock Prentice-Hall, 1993.

\bibitem[Ber98]{bert1}
Dimitri~P. Bertesekas.
\newblock {\em Network Optimization: Continuous and Discrete Models}.
\newblock Athena Scientific, first edition, 1998.

\end{thebibliography}
