5YU Cheng. A knowledge-based airport gate assignment system integrated with mathematical programming [J]. Computers and Industrial Engineering, 1997 ,32(4) :837 -852.
6J. Xu , G. Bailey. The airport gate assignment problem: mathematical model and a tabu search algorithm [A]. Proceed- ings of the 34^th Hawaii International Conference on System Sciences[C]. Hawaii, 2001:102 - 111.
7Yan Shang-yao, Huo. Cheun-Ming. Optimization of muhiple objective gate assignments[J]. Transportation Research Part A: Policy and Practice, 2001,35(5) :413 -432.