Kozicki, B., Skrabacz, A., Gałek, B. and Lorek, M. (2023) “Multidimensional analysis of losses in the number of passengers transported by air in Poland and Germany caused by the COVID-19 pandemic in terms of the maintenance of economic security”, Journal of Sustainable Development of Transport and Logistics, 8(2), pp. 58–70. doi: 10.14254/jsdtl.2023.8-2.4.