See Ethnologue ([1]); Euromosaic, Le (slavo)macédonien / bulgare en Grèce, L'arvanite / albanais en Grèce, Le valaque/aromoune-aroumane en Grèce, and Mercator-Education: European Network for Regional or Minority Languages and Education, The Turkish language in education in Greece. cf. also P. Trudgill, "Greece and European Turkey: From Religious to Linguistic Identity", in S. Barbour, C. Carmichael (eds.), Language and Nationalism in Europe, Oxford University Press 2000.
