Title: Materialy Mezhdunarodnogo simpoziuma "Issledovanie struktury ionosfery s pomoshchʹi͡u kogerentnykh radiostant͡siĭ mai͡ak i rezulʹtaty ėksperimenta na sputnike ATC-6," Moskva, noi͡abrʹ 1974
Subjects: Ionosphere, Congresses, Research, Radio beacons, Scientific satellites