Chuprov, Aleksandr Aleksandrovich, 1874-1926. Principles of the mathematical theory of correlation/ by A. A. Tschuprow. Translated by M. Kantorowitsch. - London; New York: W. Hodge and company; Nordeman Publishing Co., 1939. - x, 194 p.; 22 cm. "Notes and bibliography": p. 183-194. Subjects--Topical Terms: Correlation (Statistics) Dewey Class. No.: 519.53 / C559p