1. Lubensky, T.C. (1988) Symmetry, elasticity and hydrodynamics in quasiperiodic structures, in M.V. Jaric (ed.), Introduction to Quasicrystals, Academic Press, Boston., pp. 199–280.
2. Janssen, T. (1988) Aperiodic crystals: a contradiction in terms? Phys.Rep. 168, 55–113.
3. Ovid’ko, I.A. (1991), Defects in Condensed Media: Glasses, Crystals, Quasicrystals, Liquid Crystals, Magnetics, Superfluids, Znanie, St.Petersburg (in Russian).
4. Jain, S.C., Willis, J.R., and Bullough, R. (1990) A review of theoretical and experimental work on the structure of GeSi structured layers and superlattices, with extensive bibliography, Adv.Phys. 39, 127–90.
5. Ievlev, V.M., Trusov, L.I., and Kholmyanskii, V.A. (1988) Structural Transformations in Thin Films. Metallurgiya, Moscow (in Russian).