Wirtz M. Understanding Austria from Afar: Treating Regional Variation in the Virtu-al German as a Foreign Language Classroom.: A case study in light of COVID-19 . Frontiers [Internet]. 2021 Dec. 20 [cited 2024 Dec. 4];33(3):59-6. Available from: https://frontiersjournal.org/index.php/Frontiers/article/view/548