Open access at Current Biology:
Our results show major Western hunter-gatherer (WHG) ancestry in a Romanian Eneolithic sample [GB1_Eneo] that has a minor, yet sizeable, contribution coming from Anatolian farmers, suggesting multiple admixture events between hunter-gatherers in addition to farmers.
González-Fortes et al., Paleogenomic Evidence for Multi-generational Mixing between Neolithic Farmers in addition to Mesolithic Hunter-Gatherers inside the Lower Danube Basin, Current Biology, Published Online: May 25, 2017, DOI: http://dx.doi.org/10.1016/j.cub.2017.05.023 See also… The genomic history of Southeastern Europe (Mathieson et al. 2017 preprint)
A few more ancient genomes coming from the Balkans in addition to Iberia