Conrads, J., Irlenbusch, B., Reggiani, T., Rilke, R.M. & Sliwka, D. (2016).
"How to Hire Helpers? Evidence from a Field Experiment." Experimental Economics, 19(3), 577-594.
Bigoni, M., Fort, M., Nardotto, M., & Reggiani, T. G. (2015).
"Cooperation or Competition? A Field Experiment on Non-Monetary Learning Incentives." The B.E. Journal of Economic Analysis & Policy, 15(4), 1753–1792.