1. Auld, B.A.: Acoustic Fields and Waves in Solids. Wiley, New York (1973)
2. Balthazar, J.M., Mook, D.T., et al.: An overview on non-ideal vibrations. Meccanica 38(3), 613–621 (2003)
3. Balthazar, J.M., Palacios Felix, J.L., et al.: Nonlinear interactions in a piezoceramic bar transducer powered by vacuum tube generated by a nonideal source. J. Comput. Nonlinear Dyn. 4(011013), 1–7 (2009)
4. Bazenov, V.M., Ulitko, A.F.: Examination dynamic behaviour of a piezoceramic stratum at instantaneous electrical loading. Appl. Mech. 11(1), 22–27 (1975). (in russian)
5. Benettin, G., Galgani, L., et al.: Lyapunov Characteristic exponents for smooth dynamical systems and for Hamiltonian systems: a method for computing all of them. Meccanica 15(1), 21–30 (1980)