Phil. Trans. of the Royal Society, vol. 195 A, p. 150.
Elderton and Pearson, "On the Measure of the Resemblance of First Cousins." Eugenics Laboratory Memoirs IV. Reviewed in Br. Med. Journal, Feb. 15, 1908.
Phil. Trans. of the Royal Society, vol. 195 A, p. 106.
Elderton and Pearson, op. cit.