"Boldrin, Michele","David K. Levine", "intellectual property","The New Palgrave Dictionary of Economics","Steven N. Durlauf","Lawrence E. Blume","Palgrave Macmillan","2008","The New Palgrave Dictionary of Economics Online, Palgrave Macmillan.","24 May 2013","DOI:10.1057/9780230226203.0816"