John R. Shaffer, Jinxi Li, Myoung Keun Lee, Jasmien Roosenboom, Ekaterina Orlova: Multiethnic GWAS Reveals Polygenic Architecture of Earlobe Attachment. In: The American Journal of Human Genetics. Band101, Nr.6, 30. November 2017, S.913–924, doi:10.1016/j.ajhg.2017.10.001 (englisch).