Anagnostou, P. and Nikolova, N. (2021) “Evaluation of experience of distance-learning that was provided by Greek Public Institutes of Vocational Training (PIVT) during the pandemic COVID-19 crisis”, Ann. Sofia Univ. Fac. Math. and Inf, 108, pp. 5–15. doi: 10.60063/gsu.fmi.108.5-15.