Karupu, Olena     On some characteristics of conformal mappings [Текст] / Olena Karupu // 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. 1.53-1.59.