# Mixing processes

I hope this question is not off-topic, but I'm currently discovering the existence of mixing processes, which attempt to express the dependence between random variables using miscellaneous coefficients ($\alpha$, $\beta$, $\phi$ and $\rho$ are the ones I've met so far).

Are there any references you would advise that survey them, perhaps along with more or less concrete examples of situations where these various coefficients can be used?

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