\begin{thebibliography}{1}

\bibitem{Cagan69}
P. Cagan.
\newblock {I}nterest {R}ates and {B}ank {R}eserves.
\newblock In J. Guttentag and P. Cagan, editors, {\it Essays on Interest
  Rates}, page~, National Bureau of Economic Research, New York, 1969.

\bibitem{Kalecki71}
M. Kalecki.
\newblock {\it Selected Essays on the Dynamics of the Capitalist Economy, pp
  78-93}.
\newblock Cambridge University Press, 1971.

\bibitem{Marx71}
K. Marx.
\newblock {\it Capital III, pp 364-5}.
\newblock Progress Publishers, Moscow, 1971.

\bibitem{Marx2}
K. Marx.
\newblock {\it Op.cit, pp 208-211}.
\newblock  .

\bibitem{Marx1}
K. Marx.
\newblock {\it Op.cit, pp 370-391}.
\newblock  .

\bibitem{Steindl52}
J. Steindl.
\newblock {\it Maturity and Stagnation in American Capitalism}.
\newblock Oxford University Press,  1952.

\end{thebibliography}