3Philip T. Evers. Filling Customer Orders from Multiple Locations: A Comparison of Pooling Methods[J]. Journal of Business Logistics, 1999,20(1):121.
4S. M. Hong--Minh, S. M. Disney & M, M. Naim. The Dynamics of Emergency Transshipment Supply Chains [J]. International Joumal of Physical Distribution & Logistics Management, 2000,30(9):788.