1. Sommerfeld, A.: VDI 18 (1904)
2. Kalischuk, A.K.: Elementary method to study the dynamical properties of systems. J. Theor. Phys. 9(8), 687–696 (1939). (in Russian)
3. Martyshkin, V.S.: Installation to study the dynamical properties of building materials, in the book “Dynamical properties of building materials”. Stroyizdat, Moscow (1940). (in Russian)
4. Blekhman, I.I.: Handbook “Self-synchronization of vibrators of some vibrational machines”. Eng. Collect. 16, 49–72 (1953). (in Russian)
5. Kononenko, V.O.: Vibrating Systems with a Limited Power Supply. Iliffe Books, London (1969)