Schrom-Feiertag, Helmut, Thomas Matyus, Martin Stubenschrott, and Stefan Seer. 2020. “Empirical Findings from an Ascending Stair Evacuation Exercise in a Subway Station”. Collective Dynamics 5 (August). Jülich, Germany:480-82. https://doi.org/10.17815/CD.2020.105.