Харченко, В.П., О.Г. Кукуш, and Є.А. Знаковська. 2012. “MATHEMATICAL MODEL FOR IDENTIFICATION OF CONSTELLATION OF NAVIGATING SATELLITES GPS, GLONASS, GALILEO”. Proceedings of National Aviation University 52 (3):5-8. https://doi.org/10.18372/2306-1472.52.2341.