1. Engineering Mechanics;Higdon,1976
2. General motion of impact dampers;Masri;Journal of the Acoustical Society of America,1970
3. Snubbers calm PCB vibration;Steinberg;Machine Design,1977
4. Dynamic Vibration Absorbers;Hunt,1979
5. Hanging chain impact dampers; a simple method of damping tall flexible structures;Reed,1967