Avramova, Nadya, Ivanka Mihaylova, Krassimira Yaneva-Ribagina, Boyko Bonev, and Stanislav Nenov. 2021. “DENTAL STUDENTS’ PERSPECTIVES ON THE IMPLEMENTATION AND EFFECTIVENESS OF ONLINE LEARNING DUE TO COVID-19 PANDEMIC: A DESCRIPTIVE CROSS-SECTIONAL STUDY IN BULGARIA”. Advanced Education 8 (18):109-18. https://doi.org/10.20535/2410-8286.231011.