Bibliography ============= 1. R.W. CLOUGH, J. PENZIEN: "Dynamics of structures" - Mc GRAW - HILL - (1975). 2. "Genie parasismic" - collective work under the direction of V. DAVIDOVICI - Presses de l'E.N.P.C. (1995). 3. P. LABBE, A. PECKER, J.P. TOURET: "Seismic behavior of industrial structures" - course IPSI from September 20 to 22, 1994. 4. Fe. WAECKEL: "Method for calculating the seismic response of a multi-supported structure by modal superposition" - Note HP62 /95.017B (09/95). 5. V. GUYONVARH, G. DEVESA: "Method for calculating seismic excitations at CPP N4 anchorages" - Note HP52 /99.006 (09/99). 6. "Seismic calculation of buildings" - Rules RCC -G, appendix A. 7. :ref:`R5.03.17`