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2. Spirtes, P., et al.: Causation, Prediction, and Search. MIT Press, Cambridge (2000)
3. Pearl, J.: Causality: Models, Reasoning, and Inference. Cambridge University Press, Cambridge (2000)
4. Spirtes, P., Glymour, C., Scheines, R.: Causation, Prediction, and Search, 2nd edn. MIT Press, Cambridge (2000)
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