Babak, V. P.     Information technologies in aeronavigation [Текст] / V.P. Babak, V. Kharchenko // 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. — C. 7-24.