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Journal Article THE FREQUENCY JUSTIFICATION OF CERTAIN SEQUENTIAL TESTS Get access G. A. BARNARD G. A. BARNARD imperial CollegeLondon Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 39, Issue 1-2, May 1952, Pages 144–150, https://doi.org/10.1093/biomet/39.1-2.144 Published: 01 May 1952
G. A. Barnard (Thu,) studied this question.