Pikó, B. F., L. Brassai, and K. M. Fitzpatrick. “Social Inequalities in Self-Percieved Health: Comparing Hungarian and Ethnic Minority Adolescents from Transylvania, Rumania”. European Journal of Mental Health, June 2013, pp. 29-45, https://ejmh.semmelweis.hu/test/index.php/ejmh/article/view/96.