Ulla, Triin, and Katrin Poom-Valickis. 2023. “Contextual Factors Contributing to Quality Implementation of the PAX Good Behaviour Game in Estonia: The View of Experienced Coaches”. Eesti Haridusteaduste Ajakiri. Estonian Journal of Education 11 (1):130-58. https://doi.org/10.12697/eha.2023.11.1.06.