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no DOI — not checkedTschuprow, A. A. 1925.Grundbegriffe und Grundprobleme der Korrelationstheorie101–101. Berlin
no DOI — not checkedLund
no DOI — not checkedSkand. Aktuarietidskrift
no DOI — not checkedAnthropologia Suecica
no DOI — not checkedKapteyn and Van Uven. 1916.Skew frequency curves in. Biology and Statistics57–57. Groningen 2nd paper
no DOI — not checkedCIT0006
no DOI — not checkedLevy, P. 1925.Calcul des probabilités193–193. Paris
no DOI — not checked1926.Sannolikhetskalkylen och några av dess användningar, 121–121. 132–132. Stockholm: (Gjallarhornets förlag).
no DOI — not checkedCIT0009
no DOI — not checkedCIT0010
no DOI — not checkedLund
no DOI — not checkedCIT0012
no DOI — not checkedCIT0013
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