“Point mutations in a distant sonic hedgehog cis-regulator generate a variable regulatory output responsible for preaxial polydactyly”. 《《Human Molecular Genetics》》. 2007년 12월 21일. doi:10.1093/hmg/ddm370. PMID18156157.
“Biased Polyphenism in Polydactylous Cats Carrying a Single Point Mutation: The Hemingway Model for Digit Novelty”. 《《Evolutionary Biology》》. doi:10.1007/s11692-013-9267-y.
“Point mutations in a distant sonic hedgehog cis-regulator generate a variable regulatory output responsible for preaxial polydactyly”. 《《Human Molecular Genetics》》. 2007년 12월 21일. doi:10.1093/hmg/ddm370. PMID18156157.
