6A. K. Pandy, M. Biswus. Damage detection in structures using changes in flexibility. Journal of Sound and Vibration, 1994, 169(1) :3-17.
7A. K. Pandy, M. Biswas, Experimental Verification of Flexibility Difference Method for Locating Damge in Structures. Journal of Sound and Vibration, 1995,184 (2) : 311 - 328.
8Raghavendraehar M, Aktan A E. Flexibility by Muhireferenee Impace Testing for Bridge Diagnostics. Journal of Structural Engineering, 1992,118(8) :2186 - 2203.
9Zhao J, DeWolf J T. Sensitivity Study for Vibrational Parameters Used in Damage Detection. Journal of Structural Engineering, 1999,125(4) :410 -416.