1. G. Colson and M. Zeleny. Uncertain Prospects Ranking and Portfolio Analysis under the Conditions of Partial Information. Verlag Anton Hain, Meisenheim, 1979.
2. M. Hessel and M. Zeleny. Optimal system design: Towards new interpretation of shadow prices in linear programming. Computers and Operations Research, 14(4):265–271, 1987
3. T.C. Koopmans. Activity Analysis of Production and Allocation. Wiley, New York, 1951.
4. E. Lerner. Managerial Finance. Harcourt Brace Jovanovich, New York, 1971.
5. H. Markowitz. Portfolio selection. Journal of Finance, 7(1):77–91, 1952.