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Journal Article (ii) Note on Discriminant Functions Get access B. L. WELCH, PH.D. B. L. WELCH, PH.D. Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 31, Issue 1-2, July 1939, Page 218, https://doi.org/10.1093/biomet/31.1-2.218 Published: 01 July 1939
B. L. Welch (Sun,) studied this question.