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2. The Theory of Graphs and Its Applications, Translated by New York: Wiley, 1962, 160.
3. Optimal Policies for a Multi-Echelon Inventory Problem
4. and , “Approximate Solutions to a Simple Multi-Echelon Inventory Problem,” Chapter 5 in , and (eds.), Studies in Applied Probahility and Management Science, Stanford, Calif.: Stanford University Press, 1962.
5. “Bayes and Maximum Likelihood Policies for a Multi-Echelon Inventory Problem,” PRC R-161, ONR Contract Nonr-2713(00), Planning Research Corporation, Los Angeles (June 17, 1960).