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3. Fischer, O., Urushadze, S., 2005. The influence of bells’ movement on the adjacent masonry vibrations. In: Modena, C., Lourenço, P.B., Roca, P. (Eds.), Structural Analysis of Historical Constructions, vol. 1, A.A. Balkema Publishers, Leiden, pp. 415–420. ISBN:04-1536-379-9.
4. GERB Informationen, Schwingungsisolierung GmBH, Berlin.
5. Vibration of structures induced by seismic waves;Housner,1961