Airborne: Oliveira et al.: „Evolution of spray and aerosol from respiratory releases: theoretical estimates for insight on viral transmission“ In Proceedings of the Royal Society A (Januar 2021) https://royalsocietypublishing.org/doi/10.1098/rspa.2020.0584#d27551744e4104s

Airborne.cam, aufgerufen am 20.01.2021 https://airborne.cam/

University of Cambridge, Nachrichten: „Free online tool calculates risk of COVID-19 transmission in poorly-ventilated spaces“ (20. Januar, 2021) https://www.cam.ac.uk/research/news/free-online-tool-calculates-risk-of-covid-19-transmission-in-poorly-ventilated-spaces

Glücksempfinden im Lockdown: Stieger, Stefan et al: Emotional Well-Being Under Conditions of Lockdown: An Experience Sampling Study in Austria During the COVID-19 Pandemic. Journal of Happiness Studies, 2021; DOI: 10.1007/s10902-020-00337-2

Anglia Ruskin University: Heading outdoors keeps lockdown blues at bay. ScienceDaily; 08.01.2021. https://www.sciencedaily.com/releases/2021/01/210108084121.htm