3Gladwell G M L. Inverse problems in vibration[M]. Martinus Nijhoff Publishers, 1986.59～117.
4Boley D, Golub G H. A survey of matrix inverseeigenvalue problems[J]. Inverse Problems, 1987, 3:595～622.
5Gladwell G M L,Gbadeyan J A.On the inverse problem of the vibrating string or rod[J]. Q J Mech Appl Math, 1985,38:169～174.
6Ram Y M, Caldwell J. Physical parameters reconstruction of a free-free mass-spring system from its spectra[J]. SIAM J Appl Math, 1992, 52(1):140～152.
7Ram Y M. Inverse eigenvalue problems for a modified vibration system[J]. SIAM J Appl Math, 1993, 53(6):1762～1775.
8Gladwell G M L, Movahhedy M. Reconstruction of a mass-spring system from spectral data I: theory[J]. Inverse Problems in Engineering, 1995,1:179～189.
9Movahhedy M, Ismail F, Gladwell G M L. Reconstruction of a mass-spring system from spectral data Ⅱ: experiment[J]. Inverse Problems in Engineering, 1995,1:315～327.
10Nylen P, Uhlig F. Inverse eigenvalue problems associated with spring-mass systems[J]. Linear Algebra Appl, 1997,254:409～425.
