Catić-Đorđević, Aleksandra, Nikola Stefanović, Ana Spasić, Ivana Damnjanović, Radmila Veličković-Radovanović, Boris Đinđić, and Dragana Pavlović. 2021. “Current Overview of COVID-19 Vaccination Process in Serbia”. Acta Medicae Medianae 60 (3). https://asistent.ceon.rs/index.php/amm/article/view/32139.