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3. J. A. Noonan and D. M. Munroe, “What is Photoacoustic Spectroscopy”, Optical Spectra, February (1979).
4. T. A. Moore, R. Tom, E. P. O’Harra, D. M. Anjo, and D. Benin, “In Vivo and In Vitro Studies of Biological Materials by Photoacoustic Techniques”, presented at AAAS meeting, 26–31 May 1983, Detroit, Michigan.
5. A. Rosencwaig, Photoacoustics and Photoacoustic Spectroscopy,(1980). p.297.