A schematic depiction according to genetic studies by Alena Kushniarevich
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0135820
A schematic depiction according to genetic studies by Alena Kushniarevich
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0135820
also this section of the wiki: https://en.wikipedia.org/wiki/Ukrainian_language#Persecution_and_russification
there are 12
and only 1 single real citation