8Halliwell N A. The laser torsional vibtometer:a step forward in rotating machinery diagnostics[J]. Journal of Sound and vibration,1996,190:399-418.
9Beell J R and Rothberg S J, Laser vibrometers and contacting transducers,target rotation and six degree-of-freedom vibration: what do we measure[J]. Journal of Sound and vibration,2000,237(2):245-261.
