Age estimates for haplogroup U152:
Bulgaria 12.8 ± 4 ky; Germany 11.2 ± 2 ky; France 9.1 ± 2 ky; Greece/Athens 7.1 ± 3 ky; (Karachanak 2013)
Karachanak 2013-Y-Chromosome Diversity in Modern Bulgarians New Clues about Their Ancestry