Monova-Zheleva M, Zhelev Y, Nikolova E. Fostering technology-enhanced learning and digital innovations in schools – key factors and challenges. MEM [Internet]. 2021 Apr. 1 [cited 2026 Nov. 10];50:215-21. Available from: https://smb.math.bas.bg/mem/index.php/memjournal/article/view/26