1. Böhm-Bawerk, E. 1896. Zum Abschluss des Marxschen Systems. In Festgaben für Karl Knies, Berlin. Trans. Karl Marx and the Close of his System by Eugen Böhm-Bawerk, ed. P. Sweezy, Reprints of Economic Classics, New York: A.M. Kelley, 1966.
2. Brody, A. 1970. Proportions, prices and planning. Amsterdam: North-Holland.
3. Brody, A. 1985. Slowdown: Global economic maladies. Beverly Hills: Sage.
4. Dantzig, G. 1947. Maximization of a linear function of variables subject to linear inequalities. In Activity analysis of production and allocation, ed. T.C. Koopmans. New York/London: Wiley/Chapman, 1951.
5. Cowles foundation monograph;G Debreu,1959