(2002) „Molecular analysis of wild and domestic sheep questions current nomenclature and provides evidence for domestication from two different subspecies”. Proc. Biol. Sci.269 (1494), 893–904. o. DOI:10.1098/rspb.2002.1975. PMID 12028771.
(2009) „Revealing the History of Sheep Domestication Using Retrovirus Integrations”. Science324 (5926), 532–536. o. DOI:10.1126/science.1170587. PMID 19390051.
(2002) „Molecular analysis of wild and domestic sheep questions current nomenclature and provides evidence for domestication from two different subspecies”. Proc. Biol. Sci.269 (1494), 893–904. o. DOI:10.1098/rspb.2002.1975. PMID 12028771.
(2009) „Revealing the History of Sheep Domestication Using Retrovirus Integrations”. Science324 (5926), 532–536. o. DOI:10.1126/science.1170587. PMID 19390051.
sheep101.info
Texel. Sheep Breeds - St-U. Sheep101.info. (Hozzáférés: 2009. május 4.)