I couldnot find pairs trading strategy anywhere.

In the context of quantitative trading, how can traders effectively identify and select suitable asset pairs for implementing a pairs trading strategy?

Specifically, what methods or criteria can be used to find highly correlated or cointegrated pairs, and how do factors like market conditions, industry relationships, and historical price behavior influence the selection process? Additionally, what tools or statistical techniques can assist in validating the strength and stability of the relationship between the chosen pairs over time?

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