Y Chromosome STR Haplotypes and the Genetic Structure of U.S. Populations of African, European, and Hispanic Ancestry - Kayser, Manfred; Brauer, Silke; Schädlich, Hiltrud; Prinz, Mechthild; Batzer, Mark A.; Zimmerman, Peter A.; Boatin, B. A.; Stoneking, Mark (Genome Research, 2003)