1BRAHIMBEGOVIC A, WILSON E L. A unified formulation for triangular and quadrilateral flat shell finite elements with six nodal degrees of freedom[J]. Communications in Applied Numerical Methods, 1991,7(1): 1-9.
2WILSON E L, YUAN M W, DICKENS J M. Dynamic analysis by direct superposition of ritz vectors[J]. Earthquake Engineering and Structural Dynamics, 1982, 10(6) : 813-821.
4VALMUNDSSON E V, NAU J M. Seismic response of building frames with vertical structural irregularities [ J ]. Journal of Structural Engineering, 1997, 123(1): 30-41.
5WILSON E L, KIUREGHIAN A D, BAYO E P. A replacement for the SRSS method in seismic analysis [ J ]. Earthquake Engineering and Structural Dynamics, 1981, 9(2): 187-192.
