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[Economic Policy Implications of the COVID-19 Pandemic in Air Transport].
Scheelhaase J, Ennen D, Frieske B, Lütjens K, Maertens S, Wozny F. Scheelhaase J, et al. Among authors: lutjens k. Wirtschaftsdienst. 2021;101(2):106-113. doi: 10.1007/s10273-021-2851-3. Epub 2021 Feb 20. Wirtschaftsdienst. 2021. PMID: 33642647 Free PMC article. German.