Endogenous Technical Change, Spillovers, and Market StructureStefanBehringerauthorThis paper investigates the effect of spillovers in a model of endogenous technical change resulting from learning or network effects on the existence of a lower bound to market concentration.O32 - Management of Technological Innovation and R&DD4 - Market Structure, Pricing, and DesignL1 - Market Structure, Firm Strategy, and Market Performance2008-01-14MPRA Paper