P. Alassaf und Z. G. Szalay, „Transformation toward e-learning: experience from the sudden shift to e-courses at COVID-19 time in Central European countries; students’ satisfaction perspective“, Studia Mundi – Economica, Bd. 7, Nr. 3, S. 75–85, Sep. 2020, doi: 10.18531/Studia.Mundi.2020.07.03.75-85.