References

1. C.B. Scruby and L.E. Drain (1990)
   Laser Ultrasonic: Techniques and Application
   pub: Adam Hilger, ISDN 0-7503-0050-7
   
   
2. D.A. Hutchin, R.P. Young and J. Unger
   Laser-Generated Ultrasonic Waves for the Investigation of Porous Solids
   
3. D.A. Hutchin (1986)
   Mechanisms of Pulsed Photoacoustic Generation
   Can. J. Phys., Vol. 64, 1986
   
   
4. R. P. Young and D.A. Hutchin (1987)
   Measuring Anisotropy in the Rock Using Laser-Generated Ultrasound
   Geophys. J.R. Astr. Soc. (1987) 91, 501-506