Greving, Gerhard     Status and experience of advanced three-dimensional system simulations for navaids and radar [Текст] / Gerhard Greving // The World Congress "Aviation in the X X I-st Century", 14-16 september / International Civil Aviation Organization; Ministry of Education and Science of Ukraine; National Academy of Sciences of Ukraine; National Aviation University. — Kyiv : NAU, 2003. — С. 5.1-5.7 : іл.