Levterova-Gadjalova, D. ., and G. . Tsokov. “SELF-EFFICACY AMONG STUDENTS IN HIGHER EDUCATIONAL INSTITUTIONS DURING ONLINE LEARNING SELF-EFFICACY AMONG STUDENTS IN HIGHER EDUCATIONAL INSTITUTIONS DURING ONLINE LEARNING ”. Proceedings of CBU in Social Sciences, vol. 2, Oct. 2021, pp. 230-5, doi:10.12955/pss.v2.226.