1. A. Rosencwaig, J. Opsal, W.L. Smith, and D.L. Willenborg: Appl. Phys. Lett. 46, p. 1013 (1985).
2. W.L. Smith, A. Rosencwaig, and D.L. Willenborg: Appl. Phys. Lett. 47, p. 584 (1985).
3. W.L.Smith, C.G. Welles, and A. Rosencwaig: in “Photoacoustic and Photothermal phenomena II”, ed., J.C. Murphy, et al. Springer-Verlag Berlin, Heidelberg, p.146 (1990)
4. H.S. Li, S.Y. Zhang, J.C. Cheng, Q. Shen, and Y.S. Lu: in this proceeding.
5. A. Rosencwaig: in “photoacoutic and thermal wave Phenomena in semiconductors”, ed., A. Mandelis, North Holland, p.97 (1987)