1. M.W. Cann, ‘Light sources in the 0.15–20 um spectral range’, Appl. Opt. 8, 1645 (1969)
2. J.A. Gelbwachs, ‘Tunable radiation sources in the ultraviolet and visible spectral regions (0.1–1.0 um)’ in: Yoh-Han Pao (Ed.) ’Optoacoustic spectroscopy and detection’, Academic Press, New York (1977)
3. Suppliers: (1) EG&G Princeton Applied Research, Princeton, N.J. (2) EDT Research, London
4. Gilford Instruments, Oberlin, Ohio
5. G. Laufer, J.T. Huneke, B.S.H. Royce, Y.C. Teng, ‘Elimination of dis-persion-induced distortion in infrared absorption spectra by use of photoacoustic spectroscopy’, Appl. Phys. Lett. 37, 517 (1980)