20110711孫嘉宏
Martin D.Heintzelman, Stephen W.Salant and Stephan Schott (2009).
Putting free-riding to work – common-property problem.
Journal of Environmental Economics and Management, Vol.57, pp. 309-320.
Martin D.Heintzelman, Stephen W.Salant and Stephan Schott (2009).
Journal of Environmental Economics and Management, Vol.57, pp. 309-320.