1. K. J. Arrow and A. C. Enthoven, Quasi-concave programming, Econometrica, 29-4 (1961), 779–800.
2. K. J. Arrow, L. Hurwicz, and H. Uzawa, Studies in Linear and Non-Linear Programming, Stanford University Press, Stanford, CA, 1958.
3. M. L. Balinski and W. J. Baumol, The dual in nonlinear programming and its economic interpretation, Rev. Econ. Stud., 35-3 (1968), 237–256.
4. W. J. Baumol, Economic Theory and Operations Analysis, 3rd ed, Prentice−Hall, Englewood Cliffs, NJ, 1972.
5. L. Collatz and W. Wetterling, Optimierungsaufgaben, 2nd ed., Springer-Verlag, Berlin, 1971.