I dont know a huge amount about this culture but its place in space and time is not so different from a lot of the other groups we should interest in when talking about DNA and languages. I am starting a process of looking for reasonably up to date web based papers on the culture (there seems to be a bit of a lack). This one is a start
http://www.staff.amu.edu.pl/~praeuro/attachments/article/21/What%20Lies%20Behind%20'Import'%20and%20'Imitation'.pdf