HADZIEVA, E.; GUNCAGA, J.; BOSE, S. C.; IVANOSKA, K. S. Introductory Survey on Challenges Encountered by University Teachers in Online Teaching of STEM Subjects During COVID-19 Lockdown. Central European Journal of Educational Research, [S. l.], v. 3, n. 3, p. 22–32, 2021. DOI: 10.37441/cejer/2021/3/3/9601. Disponível em: https://ojs.lib.unideb.hu/CEJER/article/view/9601. Acesso em: 20 may. 2022.