4Shuangquan, Burentegusi, Miyamoto T. Microflora in traditional fer- mented camel's milk from Inner Mongolia,China [J]. Milchwiss- enschaft, 2004,59:649-652.
5Nowak R M.Walker' s mammals of the world [ M ].5th Edition.Baltimore: John' s Hopkin ' s University Press, 1991.