Popova, Juliana, Krasimir Koev, and Ana Popova. 2021. “The COVID 19 Pandemic Lessons in the Area of Security, Social Policy and Culture: The Case With Bulgaria: Array”. Journal of Danubian Studies and Research 11 (2). https://dj.univ-danubius.ro/index.php/JDSR/article/view/1335.