Tzevelekou, M., Iakovou, M., Kantzou, V., Lytra V., Stamouli S. & Varlokosta S. "Proficiency Levels in Greek of Muslims at the Elementary Schools." A paper presented at the XXVII Meeting of ALTE, held in Athens, in November 2003. 

Tzevelekou, M., V. Kantzou, S. Stamouli, G. Papageorgakopoulos, V. Chondroyanni, S. Varlokosta, M. Iakovou & V. Lytra (2006). "A Study on the fluency/proficiency level in the Greek language at minority schools of Thrace". Proceedings of the Two-Day Training Seminar on Intercultural Education and the Teaching of Greek as a Second Language, pp. 100-116. Nicosia: Pedagogical Institute of Cyprus. 

Tzevelekou, M., V. Kantzou, S. Stamouli, V. Chiondroyanni, S. Varlokosta & M. Iakovou, V. Lytra, A. Sioupi, A. Terzi (pending publication). "A Study on the Proficiency in the Greek Language at the Minority Schools of Thrace". Proceedings of the 13th International Conference of the Greek Applied Linguistics Association, held in Thessaloniki, on December 11-13, 2003. 

Tzevelekou, M., V. Kantzou, S. Stamouli, V. Lytra, V. Chondroyanni, G. Papageorgakopoulos, S. Varlokosta & M. Iakovou (pending publication). "Greek as a Second Language: A European Evaluation Scale for Languages and a Ranking Based on Proficiency Levels". Proceedings of the Conference on Education of Minorities: Theoretical Challenges and Pedagogical Interventions, held at the National Research Foundation, in Athens, in 2004. 

Tzevelekou, M., V. Lytra, V. Kantzou, S. Stamouli, M. Iakovou, S. Varlokosta, Y. Papageorgakopoulos, V. Chondroyanni (2005) “Proficiency in Greek of the children of Turkish speaking minority residing in Western Thrace”. Paper presented at the ALTE (Association of Language Testers in Europe) 2nd International Conference “Language Assessment in a Multilingual Context – Attaining standards, sustaining diversity”. Berlin, May 2005. 

Varlokosta, S., M. Iakovou, V. Kantzou, G. Papageorgakopoulos, S. Stamouli, M. Tzevelekou, V. Chondroyanni (pending publication). "Diagnostic tests to determine children's proficiency in Greek". Proceedings of the Third International Conference for the Teaching of Modern Greek as a Foreign Language, held in Athens, in October, 2004.