2M J Ratcliffe and N A J Lieven.Measuring rotational degrees of freedom using a laser doppler vibromete[J].Journal of Vibration and Acoustics, 2000, 122: 12-20.
3R J Guyan.Reduction of stiffness and mass matrices[J].AIAA Journal, 1965,3(2): 380.
4A N Tikhonov and V Y Arsenin.Solution of Ill-posed problems[M].Winston & Sons, Washington, D.C., 1977.
5P C Hansen.Regularization tools, A matlab package for analysis and solution of discrete Ill-posed problems[M].Department of Mathematical Modeling, Technical University of Denmark, 1998.