Papp, G.:
Usage of Online Platforms in Education of Mathematics in Transcarpathia at the Beginning of Quarantine.
In: Analysis, Applications, and Computations: Proceedings of the 13th ISAAC Congress, Ghent, Belgium, 2021. Eds.: Vindas Jasson, Sabadini Irene, Reissig Michael, Kähler Uwe, Springer International Publishing, Cham, 155-162, 2023. ISBN: 9783031363740