3Zhao P, Tomii N. An algorithm for train-set scheduling based on probabilistic local search[A]. In: Allan J,hill R J. Computer in Railway Ⅷ[C], Boston: WIT, 2002.817--826.
4Zhao P, Tomii N. An algorithm for one kind multiple groups train-set scheduling problem based on path-exchange[A]. In.. DongGen Wang. Transporation in the information age[C]. HongKong:HongKong Baptist University,2002. 75--84.
5Cynthia Barnhart, Natashia L. Boland. Flight String Models for Aircraft Fleeting and Routing[J], Transportation Science, 1998,32(3) :208--220.
6Zhu Z. The aircraft rotation problem[D]. Georgia: Georgia Institute of Technology,1994.