1. Airey, C., Hales, J., Hamilton, R., Korovessis, C., McKernan, A., & Purdon, S. (1999). The workplace employee relations survey, 1997-8 technical report.
2. Labor contracts as partial gift exchange;Akerlof;Quarterly Journal of Economics,1982
3. Production, information costs, and economic organisation;Alchian;American Economic Review,1972
4. Monitoring and pay;Allgulin;Journal of Labor Economics,2002
5. The competitive game theory of the firm;Aoki,1984