Pearl J. On the consistency rule in causal inference: axiom, definition, assumption, or theorem? Epidemiology. 2010;21:872–875. View Full Text | PubMed | CrossRef
Reference 13 in this paper was originally published in Polish in 1923 and then in English in 1990. The correct citation for the English version is as follows:
13. Splawa-Neyman J. On the application of probability theory to agricultural experiments. Essay on principles. Section 9. Statist Sci. 1990;5:465–472.
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