Noneva-Zlatkova, Yordanka, and Alexander Alexandrov. “Analysis of Higher Education Policy Changes Due to COVID-19: The Case of Bulgaria”. Balkans Journal of Emerging Trends in Social Sciences 4, no. 2 (December 30, 2021): 91–99. Accessed April 28, 2025. https://www.balkans-jetss.org/index.php/index_bjetss/article/view/69.