[1] David С. Boown, IEEE J. Quant. Electr., QE-I7(9), 1755 (1981)
[2] W. Kofhner, Appl. Phys., (2), 279 (1973)
[3] John E. Narion, VCBI.-63 543
[4] A. Knske et a;., Photoelastic Stress Analysia 103,
[6] S. Basn et al., Opt. Lett., (11),1017 (1986)
[7] J. M. Egglpeton et al., ISEB J. Quant. Electr., QE-22, 2092 (1986)
