1. M. De Crescenzi, Surf. Sci. Rep., 21, 89–175 (1995).
2. M. De Crescenzi, ibid., 91–175.
3. B. M. Kinkaid, A. E. Meixner, and P. M. Platzman, Phys. Rev. Lett., 40, 1296 (1978).
4. J. J. Rehr and R. C. Albers, Rev. Mod. Phys., 72, No. 3, 621–654 (2000).
5. A. L. Ageev, N. V. Ershov, V. R. Shvetsov, et al., Chemical Bond Length. Software Package to Process X-Ray Spectral Structural Analysis Data [in Russian], Institute of Mathematics and Mechanics, Ural Division, Russian Academy of Sciences, Sverdlovsk (1987).