Mandal, DGupta, Manash Ranjan2011-08-102011-08-102008Economic modelling,V25,3,P463-484http://hdl.handle.net/10263/2439enEndogenous growthNorth-south modelProduct developmentEfficiency wageSkilled labourUnskilled labourTrade unionIntellectual property rightUnemploymentInnovationImitationIntellectual property rights protection and unemployment in a north south model:a theoretical analysisArticle