1. A.A. Maradudin, E.W. Montroll, G.H. Weiss, I.P. Ipatova:Theory of Lattice Dynamics in the Harmonic Approximation (Academic, New York 1971)
2. R.F. Wallis: Prog. Surf. Sci.4, 233 (1973)
3. K.L. Shopra:Thin Film Phenomena (McGraw-Hill, New York 1969)
4. G.S. Benson, K.S. Yun: InThe Solid-Gas Interface, ed. by E.A. Flood, Vol. 1 (Dekker, New York 1967) p. 203
5. B.K. Sinha, W.J. Tanski, T. Lukaszek, A. Ballato: J. Appl. Phys.57, 767 (1985)