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Journal Article Randomization models for the matched and unmatched 2 × 2 tables Get access J. B. COPAS J. B. COPAS University of Essex Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 60, Issue 3, December 1973, Pages 467–476, https://doi.org/10.1093/biomet/60.3.467 Published: 01 December 1973 Article history Received: 01 September 1972 Revision received: 01 May 1973 Published: 01 December 1973
J. B. Copas (Mon,) studied this question.