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2. M. Sargent III, M.O.Scully, W.E.Lamb Jr.: Laser Physics (Addison-Wesley, New York 1977)
3. P. Meystre, M. Sargent III: Elements of Quantum Optics, 2nd edn. (Springer, Berlin, Heidelberg 1991)
4. Y.R.Shen: The Principles of Nonlinear Optics (Wiley, New York 1984)
5. D.L.Mills: Nonlinear Optics (Springer, Berlin, Heidelberg 1991)