Shibayama, Takeru, Fabian Sandholzer, Barbara Laa, and Tadej Brezina. 2021. “Impact of COVID-19 Lockdown on Commuting: A Multi-Country Perspective”. European Journal of Transport and Infrastructure Research 21 (1):70-93. https://doi.org/10.18757/ejtir.2021.21.1.5135.