J. R. S.  Meadows, Li, K., Kantanen, J., Tapio, M., Sipos, W., Pardeshi, V., Gupta, V., Calvo, J. H., Whan, V., Norris, B., and Kijas, J. W., ?Mitochondrial sequence reveals high levels of gene flow between breeds of domestic sheep from Asia and Europe?, Journal of Heredity, vol. 96, no. 5, pp. 494-501, 2005.