1. Abbink, K., & Abdolkarim, S. (1995). RatImage—research assistance toolbox for computer-aided human behavior experiments. SFB 303 Discussion Paper B-325, University of Bonn.
2. Falkinger, J., Fehr, E., Gächter, S., & Winter-Ebmer, R. (2000). A simple mechanism for the efficient provision of public goods: Experimental evidence. American Economic Review, 90, 247–264.
3. Fischbacher, U. (1999). z-Tree. Toolbox for readymade economic experiments. IEW Working paper 21, University of Zurich.
4. Kirchkamp, O. (2004). WWW experiments for economists, a technical introduction. http://www.kirchkamp.de/research/webexp.html, accessed at March 29, 2006.
5. Plott, C. R. (1991). A computerized laboratory market system for research support systems for the multiple unit double auction. Social Science Working Paper 783. Pasadena: California Inst. Tech.