7H. Timothy Lee. Implementation of Oracle's advanced queuing in an aircraft weight and balance system[J]. Computer Engineer and Computer Science, 2000, 1002: 35-37.
8Ovidiu L O, Rommert D. A Scenario aggregation-based approach for determining a robust airline fleet composi- tion for dynamic capacity allocation[J]. Transportation Science,2005,39(3) : 367-382.