Reproduced from: Akademiia Nauk Ukrains'Koi Rsr, Dopovidi, Seriia A-Fiziko-Tekhnichni I Matematichni Nauki. Abstracted in International Aerospace Abstracts. A71-20651.
Reproduction Note
Microform. New York : American Institute of Aeronautics and Astronautics, Technical Information Service, [19--?]