https://www.nature.com/articles/s41598-019-41945-0


Ancient human mitochondrial genomes from Bronze Age Bulgaria: new insights into the genetic history of Thracians







One of the best documented Indo-European civilizations that inhabited Bulgaria is the Thracians, who lasted for more than five millennia and whose origin and relationships with other past and present-day populations are debated among researchers. Here we report 25 new complete mitochondrial genomes of ancient individuals coming from three necropolises located in different regions of Bulgaria – Shekerdja mogila, Gabrova mogila and Bereketska mogila – dated to II-III millennium BC. The identified mtDNA haplogroup composition reflects the mitochondrial variability of Western Eurasia. In particular, within the ancient Eurasian genetic landscape, Thracians locate in an intermediate position between Early Neolithic farmers and Late Neolithic-Bronze Age steppe pastoralists,


and an extra
https://ancientdnahub.com/story_10240.html


or two

https://www.academia.edu/42027736/Mi...ittoral_origin




I thought I better give you the old 2013 as well
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3590186/