[7] CHEUNG R K, CHEN C Y. A two-stage stochastic network model znd solution methods for the dynamic empty container allocation problem [J]. Transportation Science, 1998, 32(2): 142-162.
[8] FIEDRICH F, GEHBAUER F, RICKERS U. Optimized resource allocation for emergency response after earthquake disasters [J]. Safety Science, 2000, 35(1-3): 41-57.