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Hasło osobowe:
Četaev, Nikolaj Gur'evič (1902-1959).
Notes
Mechanika.
Theoretical mechanics / N. G. Chetaev. - Moscow, 1989. Biogram
Kp. Ustojčivost' dviženiâ / N. G. Četaev. - Izd. 3. - Moskva, 1965.