Gaidamanchuk, Viktor, and Mykola Matvienko. “MAIN PRINCIPLES OF THE SATELLITE SYSTEM PROVIDING PNT INFORMATION FOR MOVING OBJECTS UNDER GNSS VULNERABILITY”. Information and Telecommunication Sciences, no. 2 (December 28, 2017): 27–31. Accessed August 17, 2025. https://infotelesc.kpi.ua/article/view/119895.