Güth, Werner Max Planck Institute for Research on Collective Goods, Max Planck Society;
https://dx.doi.org/10.1561/105.00000051 (Any fulltext)
Güth, W., Levati, M. V., Nardi, C., & Soraperra, I. (2016). An ultimatum game with multidimensional response strategies. Review of Behavioral Economics, 3(3/4), 281-310.