1. A. I. Gudkov, P. S. Leshakov, External loads and strength of aircraft. (Mashinostroenie, Moscow, 1968) p.470
2. A. I. Makarevsky, The strength of the aircraft, (Mechanical Engineering, Moscow, 1975), p. 277
3. V. V. Bolotin Random oscillations of elastic systems. (Moscow, 1979), p.331
4. A. A. Sveshnikov, Applied methods of the theory of random functions, (Moscow, 1968), p. 460
5. F. B. Badalov, Methods for solving integral and integro-differential equations of the hereditary theory of viscoelasticity, (Tashkent, 1987), p. 269