Local evolution cannot account for such abrupt changes (…) The pottery is relatable to the earliest Neolithic in the Middle Urals and Soviet Central Asia.
Notes from Wikiquote
M. Gimbutas: “Primary and Secondary Homeland”, JIES 1985, p.191, quoted in Elst, Koenraad (1999). Update on the Aryan invasion debate New Delhi: Aditya Prakashan.