Fragkiadakis, G. F. “The Impact of COVID-19 on European and Greek Healthcare Systems: An Overview of Public Finances and Healthcare Challenges”. International Conference on Business and Economics - Hellenic Open University, vol. 3, no. 1, Aug. 2024, https://eproceedings.epublishing.ekt.gr/index.php/ICBE-HOU/article/view/7123.