6Ball M, Barnhart C. Total delay impact study: a comprehensive as- sessment of the costs and impacts of flight delay in the United States. The National Center of Excellence For Aviation Operations Research, 2010,10.
7Donohue G, 'Laskey K B. Estimation of delay propation in the nation- al aviation system using bayesian networks. 6h USA/Europe Air Traf- fic Management Research and Development Seminar,2005, 06.
8Xu Ning. Chen Chun Hung. Bayesian network analysis of flight De- lays. TRB 2007 Annual Meeting CD-ROM.