6Eppen G D, Iyer A V. Backup agreements in fashion buying--The value of upstream flexibility [ J ]. Management Science, 1997, 43( 11 ) : 1469 - 1484.
7Brown A O, Lee H L. Optimal pay-to-delay capacity reservation with application to the semiconductor industry [ R ]. Working Paper, Stanford, CA: Department of Industrial Engineering and Engineering Management, Stanford University, 1997.
8Bassok Y, Anupindi R. Analysis of supply contracts with total minimum commitment [ J ]. liE Transactions, 1997, 9 (5) : 373 - 381.
9Tsay A A, Lovejoy W. Quantity flexibility contracts and supply chain performance [ J ]. Journal Manufacturing and Service Operations Management, 1999, 1 (2) : 89 - 111.
10Wang Q Z, Tsao D. Supply contract with bidirectional options : The buyer' s perspective [ J ]. International Journal of Production Economics, 2006, 101 ( 1 ) :30 -52.
