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[2] [2] L. I. Schiff, Quantum Mechanics (McGraw-Hill Book Company, New York, 1968) pp.163-164.

[3] [3] S. Gasiorowicz, Quantum Physics (2nd edn.) (John Wiley and Sons, New York, 1996) p.49.

[4] [4] W. A. Harrison, Applied Quantum Mechanics (World Scientific, Singapore, 2000) pp.9-43.

[5] [5] S. J. van Enk and G. Nienhuis, Opt. Commun. 94, 147 (1992).

[6] [6] E. Hecht, Optics (Addison-Wesley, San Francisco, 2002) pp.328-333.

[7] [7] L. Mandel and E. Wolf, Optical Coherence and Quantum Optics (Cambridge University. Press, Cambridge, 1995) pp.573-576.