Diachronic corpus of Greek of the 20th century

Preliminary research findings have been presented in the paper: 

Fragaki, G. & Goutsos, D. 2015. Greek diglossia in the 20th century: A historical corpus linguistics approach. Paper presented at the 12th International Conference on Greek Linguistics (ICGL12), 16-19 September, Freie Universität Berlin.

The paper's presentation can be found here.