Anastasiadou, S. D., and C. S. Tiliakou. “Investigation of the Discriminating Ability of the Greek State Certificate of Language Proficiency by Means of Vacor Method: The Case of Greek Speaking and Turkish Speaking Students from the Muslim Minority of Thrace”. International Journal of Learning and Teaching, vol. 8, no. 2, July 2016, pp. 109-18, doi:10.18844/ijlt.v8i2.517.