Clark RM، Marker PC، Kingsley DM (2001). "A novel candidate gene for mouse and human preaxial polydactyly with altered expression in limbs of Hemimelic extra-toes mutant mice". Genomics. ج. 67 ع. 1: 19–27. DOI:10.1006/geno.2000.6225. PMID:10945466.
Horikoshi T، Endo N، Shibata M، وآخرون (2003). "Disruption of the C7orf2/Lmbr1 genic region is associated with preaxial polydactyly in humans and mice". J. Bone Miner. Metab. ج. 21 ع. 1: 1–4. DOI:10.1007/s007740300000. PMID:12491086.
Lettice LA، Heaney SJ، Purdie LA، وآخرون (2003). "A long-range Shh enhancer regulates expression in the developing limb and fin and is associated with preaxial polydactyly". Hum. Mol. Genet. ج. 12 ع. 14: 1725–35. DOI:10.1093/hmg/ddg180. PMID:12837695.
Hillier LW، Fulton RS، Fulton LA، وآخرون (2003). "The DNA sequence of human chromosome 7". Nature. ج. 424 ع. 6945: 157–64. DOI:10.1038/nature01782. PMID:12853948.
Ota T، Suzuki Y، Nishikawa T، وآخرون (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. ج. 36 ع. 1: 40–5. DOI:10.1038/ng1285. PMID:14702039.
Sagai T، Masuya H، Tamura M، وآخرون (2004). "Phylogenetic conservation of a limb-specific, cis-acting regulator of Sonic hedgehog ( Shh)". Mamm. Genome. ج. 15 ع. 1: 23–34. DOI:10.1007/s00335-033-2317-5. PMID:14727139.