1. Almogy, Y. and O. Levin, Parametric analysis of a multi-stage stochastic shipping problem, in Operational Research’ 69, J. Lawrence, ed., Tavistock Publications, London, 1970, 359–370.
2. Asmussen, S., Applied Probability and Queues, Wiley, New York, 1987.
3. Aubin, J.B., Optima and Equilibria (An Introduction to Nonlinear Analysis), Graduate Texts in Mathematics Vol. 140, Springer Verlag, Berlin, 1993.
4. Avriel, M., Diewert, W.E., Schaible, S. and I. Zang, Generalized Concavity, Plenum Press, New York, 1988.
5. Barros, A., Discrete and Fractional Programming Techniques for Location Models, Kluwer Academic Publishers, Dordrecht, 1998.