Kharchenko, V. P     Evaluation of probability of aircraft collision at cooperative air traffic control [Текст] / V.P Kharchenko, V. Vasylyev, A. Kukush // Proceedings of the Second World Congress "Aviation in the X X I-st Century" "Safety in Aviation", September 19-21, 2005 / International Civil Aviation Organization; Ministry of Education and Science of Ukraine; National Academy of Sciences of Ukraine; National Aviation University. — Kyiv : NAU, 2005. — P. 3.52-3.56 : іл.