1. An Z Y, Li Y L (1995). Investigation and verification of Hu sheep history. Chinese Agricultural History, 14(1): 15–18 (in Chinese)
2. Cao D G, Du L X, Li S Q (2002). RAPD analysis of 4 sheep breeds. Chinese Journal of Animal Science, 38(2): 12–14 (in Chinese)
3. Compiling Group of Sheep and Goat Breeds in China (1989). Sheep and Goat Breeds in China. Shanghai: Shanghai Scientific & Technical Publishers, 3–4 (in Chinese)
4. Gong Y F, Li X L, Liu Z Z, Li J Q (2002). Study on RAPD of Chinese main indigenous sheep breeds. Hereditas (Beijing), 24(4): 423–426 (in Chinese)
5. Hiendleder S, Mainz K, Plante Y, Lewalski H (1998). Analysis of mitochondrial DNA indicates that domestic sheep are derived from two different ancestral maternal sources: No evidence for contributions from Urial and Argali sheep. Hered, 89(2): 113–120