Soll, M., Salvet, S., & Masso, A. (2014). The role of the language of instruction in the formation of the ethno-cultural identity of Estonian Russian-speaking students. Eesti Haridusteaduste Ajakiri. Estonian Journal of Education, 2(2), 200–236. https://doi.org/10.12697/eha.2014.2.2.08