1. A. Ya. Aleshin, “Natural frequencies of spatially curved bars of arbitrary cross-section,” Tr. VNIIFTRI, 8 (38), 55–66 (1971).
2. V. L. Biderman, Theory of Mechanical Vibrations [in Russian], Vysshaya Shkola, Moscow (1980).
3. F. M. Dimentberg and K. S. Kolesnikov (eds.), Vibrations of Machines, Structures and Their Elements, Vol. 3 of the six-volume handbook Vibrations in Engineering [in Russian], Mashinostroenie, Moscow (1980).
4. I. D. Grudev, “Large deflections of spatial thin bars,” Tr. VNIIFTRI, 8 (38), 17–37 (1971).
5. J. P. Den Hartog, Mechanical Vibrations, McGraw-Hill, New York (1956).