R. Zhou, L. An, X. Wang, W. Shao, G. Lin, W. Yu, L. Yi, S. Xu, J. Xu, X. Xie: Testing the hypothesis of an ancient Roman soldier origin of the Liqian people in northwest China: a Y-chromosome perspective. In: Journal of human genetics. Band 52, Nummer 7, 2007, S. 584–591, doi:10.1007/s10038-007-0155-0, PMID 17579807.
R. Zhou, L. An, X. Wang, W. Shao, G. Lin, W. Yu, L. Yi, S. Xu, J. Xu, X. Xie: Testing the hypothesis of an ancient Roman soldier origin of the Liqian people in northwest China: a Y-chromosome perspective. In: Journal of human genetics. Band 52, Nummer 7, 2007, S. 584–591, doi:10.1007/s10038-007-0155-0, PMID 17579807.