COVID-19 reporting and willingness to pay for leisure activities
S. Warkulat, S. Krull, R. Ortmann, N. Klocke, M. Pelster, Covid Economics (2021) 183–205.

The Power and Peril of Precise vs. Round Health Message Interventions to Increase Stair-Use
S. Krull, D.D. Loschelder, L. Boecker, Frontiers in Psychology (2021).

COVID-19 Reporting and Willingness to Pay for Leisure Activities
R. Ortmann, S. Warkulat, S. Krull, N. Klocke, M. Pelster, COVID-19 Reporting and Willingness to Pay for Leisure Activities, 2021.