1. N. N. Bogolyubov and Yu. A. Mitropol'skii, Asymptotic Methods in the Theory of Nonlinear Vibrations [in Russian], Nauka, Moscow (1974).
2. A. A. Bondarenko and A. I. Telalov, ?Experimental study of the dynamic instability of cylindrical thinwalled shells on a vibrating foundation,? in: Fifth All-Union Conference on Problems of Stability in Structural Mechanics, Leningrad, 1977. Moscow (1977), pp. 128?129.
3. A. S. Vol'mir, Flexible Plates and Shells, Gostekhizdat, Moscow (1956).
4. A. S. Vol'mir, Nonlinear Dynamics of Plates and Shells, Nauka, Moscow (1972).
5. N. F. Grishin and V. S. Kalinin, ?Effect of initial irregularities on the vibration of plates and shells,? in: Theory of Plates and Shells: Transactions of the Ninth All-Union Conference on the Theory of Plates and Shells, Leningrad, 1973. Leningrad (1975), pp. 175?180.