Migrationists consider that movement of people is responsible for the movement of pottery assemblages, and they think that it suffices to demonstrate that potteries have moved to demonstrate the migrations.

Cleuziou, Serge. 1986. "Tureng Tepe and Burnished Grey Ware: A Question of 'Frontier'?" Oriens Antiquus 25:221 -256. page 244, quoted in Bryant, E. F. (2001). The Quest for the Origins of Vedic Culture : the Indo-Aryan migration debate. Oxford University Press. chapter 10