1. Sommerfeld, A.: Beiträge Zum Dynamischen Ausbau Der Festigkeitslehe. Physikal Zeitschr 3, 266–286 (1902)
2. Kononenko, V.O.: Vibrating Systems with Limited Excitation [in Russian]. (1964) (Nauka, Moscow)
3. Blekhman, I.I.: Vibrational Mechanics: Nonlinear Dynamic Effects, General Approach, Applications. World Scientific, Singapore (2000)
4. Nayfeh, A., Mook, D.: Nonlinear Oscillations. Wiley-Interscience, New York (1979)
5. Balthazar, J.M., Mook, D.T., Brasil, R.M.L.R.F., Fenili, A., Belato, D., Felix, J.L.P., Weber, H.I.: Recent results on vibrating problems with limited power supply. Meccanica 330(7), 1–9 (2002)