Langenbach, P. (2014). The values of ex-ante and ex-post communication in dictator games. Bonn: Max Planck Institute for Research on Collective Goods, Discussion Paper 2014/7, (published as "The willingness to pay for voice in dictator games" with Tim Friehe)

Kleine, M., Langenbach, P., & Zhurakhovska, L. (2013). How Voice Shapes Reactions to Impartial Decision-Makers: An Experiment on Participation Procedures. Bonn: Max Planck Institute for Research on Collective Goods, Discussion Paper 2013/11