8Xu Ning,Chen C H,Propagation of Delays in the National Airspace System[C]//the 22nd Conference on Uncertainty in Artificial Intelligence, 2006-07.
9Schaefer L,Millner D.Flight delay Propagation analysis with the detailed policy [C]//the 2001 IEEE Systems,Man,and Cybernetics Conference, 2001.
10Xu Ning,Donohue G,Laskey K B.Estimation of delay propagation in the national aviation system using Bayesian networks[C]//6th USA/Europe Air Traffic Management Research and Development Seminar, 2005-06.