\begin{thebibliography}{Goe94}

\bibitem[Goe94]{goemans:lp}
M.~Goemans.
\newblock Introduction to {Linear Programming}.
\newblock Lecture notes, available from http://www-math.mit.edu/\~{}goemans/,
  October 1994.

\bibitem[Kar91]{karloff:lp}
H.~Karloff.
\newblock {\em Linear Programming}.
\newblock {Birkh\"auser}, Boston, MA, 1991.

\end{thebibliography}