[1] D. F. Walls, Nature, 306(10), 141 (1983)

[2] Η. P. Yuen, Phys. Rev. A, 13(6), 2326(1976)

[3] H. P. Yuen and J. H. Shapiro, IEEE Τran Inform. Theory, IT-24(6), 657 (197S) ; J. H. Shapiro and H. P. Yuen et al., IEEE Τran. Inform. Theory, IT-25(2), 179 (1979)

[4] С. Μ. Caves, Phys. Rev., 23(8), 1693 (1981)

[5] G. J. Milbum et al., JOSA B, 1(3), 390 (1984)

[6] M. WoHnsky et al., Opt. Commun., 55(2),138(1985)

[7] R. Ε. Slucher and L. Hollberg et al., Phys. Rev. Lett., 25(22), 2409 (1985)

[8] M. W. Maeda et al., Opt. Lett., 12,(3)161 (1987)

[9] Ling-Au Wu et al., Phys. Rev. Lett., 57(2), 2520 (1986)

[10] P. D. Drumond and D. F. Walls, Phys. Rev. A, 23(5), 2563 (1981)

[11] W. H. Louisell, Quantnm Statistical Properitiea of Eadiation, (Wiley, New York, 1973)

[12] R. J. Glauber, Phys. Rev., 131(6), 2767(1963)

[13] P. D. Drummond and C. W. Gardiner, J. Phys. A: Math. Gen., 13, 2353 (1980)

[14] R. Loudon, J. of Mod. Opt., 34(6/7), 709 (1987)