1. P. L. Kapitza, Zh. Eksp. Teor. Fiz., 21, 588 (1951).
2. A. Stephenson, Phil. Mag. J. Sci., 15, 233 (1908).
3. N. N. Bogolyubov, in: Collection of Works of the Institute of Structural Mechanics of the Academy of Sciences of the Ukranien SSR, Vol. 14 [in Russian], Kiev (1950), pp. 9–34.
4. P. L. Kapitza, Usp. Fiz. Nauk, 44, 7 (1951).
5. L. D. Landau and E. M. Lifshits, Mechanics [in Russian], Fizmatlit, Moscow (2007).