1. for example, Proc. of the 5th Workshop on Total Reflection X-Ray Fluorescence Spectroscopy and Related Spectroscopical Methods, Tsukuba, Japan, October 17-19, 1994.
2. H. Kiessig, Ann. Physik, 10:715 (1931).
3. L.G. Parratt, Phys. Rev. 95:359 (1954).
4. A. Segmuller, A.I.P. Conf. Proc., 53:78 (1979).
5. K. Sakurai and A. Iida, Jpn. J. Appl. Phys. 31:L113 (1992).