6I Massimo F. , "Modeling safety case evolution - examples from the air traffic management domain", Lecture Notes in Computer Science, no. 3943 (2006), pp. 81 - 96.
7Shorroek S. T. , "Errors of perception in air traffic control", Safety Science, vol. 45, no. 8 (2007), pp. 890 - 904.
8Chaloulos G. , "A simulation based study of subliminal control for air traffic management", Transportation Research, vol. 18, no. 6(2010) ,pp. 963 - 974.