Separating the post-Glacial coancestry of European and Asian Y chromosomes within haplogroup R1a.
Underhill PA, Myres NM, Rootsi S, Metspalu M, Zhivotovsky LA, King RJ, Lin AA, Chow CE, Semino O, Battaglia V, et al. Eur J Hum Genet. 2010 Apr; 18(4):479-84. Epub 2009 Nov 4.