Kamil Krasuski, Ewelina Kobialka, and Marek Grzegorzewski. 2019. “Research of Accuracy of the Aircraft Position Using the GPS and EGNOS Systems in Air Transport”. Communications - Scientific Letters of the University of Zilina 21 (4), 27-34. https://doi.org/10.26552/com.C.2019.4.27-34.