1. V.S. Letokhov, V.P. Zharov: Opto-Acoustic Molecular Spectroscopy, Springer Ser. Opt. Sci. 37, (Springer, Berlin, Heidelberg 1983)
2. A. Rosencwaig, A. Gersho: J. Appl. Phys. 47, 64 (1976)
3. H.L. Fang, R.L. Swofford: In Ultrasensitive Laser Spectroscopy, 175, ed. by D. Kliger (Academic, New York 1983)
4. Chenming Hu, J.R. Whinnery: Appl. Optics 12, 72 (1973)
5. J.M. Harris, In: Chemical Analysis, 87, 451, ed. by E.H. Piepmeier (Wiley, New York 1986)