Referências: |
Bibliografia:
D.L.Mills & Burstein, Rep.Prof.Phys.37, 817-962 (1974) Introduction To Surface And Superlattite Excitations, M.G.Cottam & D.R.Tilley (Cambridge University Press, 1989)
Ashcroft And Mermin: Solid State Physics: H.R.Winston, 1976.
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