1. AMR Research, Inc. Independent Trading Exchanges––The Next Wave of B2B e-commerce, 1999
2. E. Andren, Steel marketplaces are strengthening their mettle, Gartner Group, Inc. January 4, 2000
3. Supply Contracts with Quantity Commitments and Stochastic Demands;Anupindi,1998
4. V. Araman, J. Kleinknecht, R. Akella, Supplier and procurement risk management in e·business, Working Paper, Department of Management Science and Engineering, Stanford University, Stanford, CA, 2001
5. Introduction to Probability and Mathematical Statistics;Bain,1992