Fehr, Ernst; Schmidt, Klaus; Bartling, Björn (2013). Use and abuse of authority: A behavioral foundation of the employment relation. Journal of the European Economic Association, 11(4):711-742.
Fehr, Ernst; Schmidt, Klaus (2001). Theories of Fairness and Reciprocity - Evidence and Economic Applications. Working paper series / Institute for Empirical Research in Economics No. 75, University of Zurich.