Suggested reading:
  • J.M.Ziman, "Principles of the theory of solids", Cambridge University Press, 1979
  • N.W.Ashcroft and N.D.Mermin, "Solid state physics", Thomson learning, 1976
  • Ch.Kittel, "Introduction to solid state physics", Wiley & Sons, 2005
  •  G.Czycholl, "Theoretische Festkörperphysik", Springer,  2004 (in German)