Arrow K. J. L. Hurwicz, Uzawa H.: Constraint Qualifications in Maximization Problems
. Naval Research Logistics Quarterly, Vol. 8, No. 2, June 1961. MR 0129481
 Charnes A., and W. W. Cooper: The Strong Minkowski Farkas-Weyl Theorem for Vector spaces over Ordered Fields
. Proceedings of Nat. Acad. Sciences, Vol. 44, No. 9, pp. 914 - 916, Sept. 1958. DOI 10.1073/pnas.44.9.914
| MR 0142056
 Charnes A., and W. W. Cooper: Management Models and Industrial Applications of Linear Programming
. Vols. I and II, New York, J. Wiley and Sons, 1961. MR 0157773
 Kortanek K.: Duality, Semi-Infinite Programming, and Some Aspects of Control in Business and Economic Systems. Ph. D. Thesis, Northwestern University, Evanston, III., 1964.
 Kuhn H. W., Tucker A. W.: Non-Linear Programming. Proc. 2nd Berkeley Symp. Math. Stat. and Prob., J. Neyman (ed.), U. Calif. Press, Berkeley, Calif., 1951, pp. 481-492.
 Slater M.: Lagrange Multipliers Revisited: A Contribution to Non-Linear Programming. Cowles Commission Paper, Math. No. 403, New Haven, Nov. 1950.