Lysenko, Olexandr, Miroslav Sparavalo, Olena Tachinina, Valerii Yavisya, and Sergiy Ponomarenko. “FEASIBILITY REASONING OF CREATING ULTRA-LOW ORBIT COMMUNICATION SYSTEMS BASED ON SMALL SATELLITES AND METHOD OF THEIR ORBITS DESIGNING”. Information and Telecommunication Sciences, no. 1 (June 28, 2020): 59–70. Accessed December 2, 2025. https://infotelesc.kpi.ua/article/view/206620.