Light scattering in the critical

As was mentioned earlier, Levanyuk has pointed out a possible inaccuracy in the Ornstein-Zernike theory of light scattering in the critical region, but his corrections were not carried to the numerical stage. His equations were essentially only a possible example of a nonlinear equation for G(r), which has already been considered here. 

There are many experimental investigations of X-ray and light scattering in the critical region which we have not attempted to review. 

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