1. See, for example, Proc. 12th Int. Conf. Photoacoustic and Photothermal Phenomena [Rev. Sci. Instrum. Part II 74(1) (2003)]
2. See, for example, R. Gupta: in Photothermal Investigations of Solids and Fluids, ed. by J.A. Sell (Academic, New York 1989) Chap. 3
3. Y. Li, R. Gupta: Appl. Opt. 42, 2226 (2003)
4. Y. Li, R. Gupta: Appl. Phys. B 75, 903 (2002)
5. See, for example, R. Gupta: in Proc. 11th Int. Symp. Laser-Aided Plasma Diagnostics, Les Houches, France, 2003 (unpublished)