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STUDIES IN STATISTICAL ECOLOGY: SPATIAL PATTERN Get access J. G. SKELLAM J. G. SKELLAM The Nature ConservancyLondon Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 39, Issue 3-4, December 1952, Pages 346–362, https://doi.org/10.1093/biomet/39.3-4.346 Published: 01 December 1952
J. G. Skellam (Tue,) studied this question.