Phylogeography of Y-chromosome haplogroup I reveals distinct domains of prehistoric gene flow in europe. - Rootsi S; Magri C; Kivisild T; Benuzzi G; Help H; Bermisheva M; Kutuev I; Barać L; Pericić M; Balanovsky O; Pshenichnov A; Dion D; et al. (American journal of human genetics, 2004)