1. S. Kusuoka, A diffusion process on a fractal, preprint.
2. P. Billingsley, Convergence of Probability Measures, Wiley, New York (1968).
3. R.A. Guyer, Phys. Rev. A 29, 2751 (1984).
4. R. Rammal and G. Toulouse, J. Physique-Lettres 44, L-13 (1983).