The COVID 19 Pandemic Lessons in the Area of Security, Social Policy and Culture: The Case with Bulgaria. Journal of Danubian Studies and Research, [S. l.], v. 11, n. 2, 2021. Disponível em: https://dj.univ-danubius.ro/index.php/JDSR/article/view/1335. Acesso em: 20 apr. 2026.