Decsi, Péter, Ádám Bors, Péter Kocsor, Bálint Vörös, Barnabás Horváth, Sándor Guba, Zoltán Gugolya, Sándor Mester, and István Szalai. 2021. “A Framework for Demonstration Devices Used in Distance-Learning Environments”. Hungarian Journal of Industry and Chemistry 49 (1):17-21. https://doi.org/10.33927/hjic-2021-03.