Kwaśny, Jakub, Arkadiusz Mroczek, and Marta Ulbrych. “Externalities of Knowledge Diffusion in Cities and the COVID-19 Pandemic”. Studies of the Industrial Geography Commission of the Polish Geographical Society 36, no. 2 (June 29, 2022): 231–243. Accessed June 4, 2023. https://prace-kgp.up.krakow.pl/article/view/8991.