A substantial prehistoric European ancestry amongst Ashkenazi maternal lineages
Marta D. Costa, Joana B. Pereira, Maria Pala, Veronica Fernandes, Anna Olivieri, Alessandro Achilli, Ugo A. Perego, Sergei Rychkov, Oksana Naumova, Ji?i Hatina, Scott R. Woodward, Ken Khong Eng, Vincent Macaulay, Martin Carr, Pedro Soares, Luisa Pereira & Martin B. Richards
Nature Communications Volume: 4, 2543, Published 8-Oct-13