Kozlovskyi, Serhii, Daria Bilenko, Mykhailo Kuzheliev, Natalya Ivanyuta, Vira Butenko, and Ruslan Lavrov. “Comparison and Assessment of Factors Affecting the COVID-19 Vaccination in European Countries”. Problemy Ekorozwoju 16, no. 2 (July 1, 2021): 26–33. Accessed November 22, 2024. https://ph.pollub.pl/index.php/preko/article/view/5166.