Freund, Lars Max Planck Institute for Research on Collective Goods, Max Planck Society;
https://doi.org/10.1628/093245616X14785139251341 (Any fulltext)
Hoeppner, S., Freund, L., & Depoorter, B. (2017). The Moral-Hazard Effect of Liquidated Damages: An Experiment on Contract Remedies. Journal of Institutional and Theoretical Economics, 173(1), 84-105.