Fisher, R. A. (1919). XV.—The correlation between relatives on the supposition of Mendelian inheritance. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 52(2), 399–433.

• https://www.cambridge.org/core/journals/earth-and-environmental-science-transactions-of-royal-society-of-edinburgh/article/xv-correlation-between-relatives-on-the-supposition-of-mendelian-inheritance/A60675052E0FB78C561F66C670BC75DE
• https://scholar.google.com/scholar?cluster=9370923615547096977
• fisher1918.pdf (internal lab link)