1. Ahuja R.K., Magnati T.L. and Orlin J.B., Network Flows: Theory, Algorithms and Applications, New York: Prentice Hall, 1993.
2. Alvarez A., Chacon O., Litvinchev I.S., and Rangel S., Aggregation in the Generalized Transportation problem, J. Comput. Syst. Scis. Intl., 2001, vol. 40, no. 6, pp. 923–929.
3. Birge J.R., Aggregation Bounds in Stochastic Linear Programming, Math. Progr., 1985, vol. 31, pp. 25–41.
4. Edirisinghe N.C.P. and Ziemba W.T., Tight Bounds for Stochastic Convex Programs, Oper. Res., 1992, vol. 40, no. 4, pp. 660–677.
5. Evans J.R., Aggregation in the Generalized Transportation Problem, Computers Oper. Res., 1979, vol. 6, pp. 199–204.