Ülviste, A. M., Suurorg, K., Balõtšev, R., Padrik, M. and Peek, T. (2025) “Identifying communication difficulties in early childhood: Validation of the FOCUS questionnaire”, Eesti Haridusteaduste Ajakiri. Estonian Journal of Education, 13(2), pp. 134–162. doi: 10.12697/eha.2025.13.2.06.