1. Y. Amazit, M. Fisher, B. Perrin, et al., Europhys. Lett. 25, 441 (1994).
2. S. Y. Goshen and J. L. Birman, J. Phys. (Paris) 4, 1077 (1994).
3. O.A. Belyaev and V.A. Koptsik, Kristallografiya 42, 225 (1997) [Crystallogr. Rep. 42, 888 (1997)].
4. D. Levine, T. C. Lubensky, S. Ostlund, et al., Phys. Rev. Lett. 54, 1520 (1985).
5. T. C. Lubensky, in Aperiodicity and Order, Vol. 1. Introduction to Quasicrystals (Academic, Boston, 1988), p. 199.