Discussion paper DP5481 Patents, Imitation and Licensing in an Asymmetric Dynamic R&D Race Chaim Fershtman Sarit Markovich 9 Feb 2006 Industrial Organization D43 L1 O3
Discussion paper DP1971 Patent Renewals and R&D Incentives Mark Schankerman Francesca Cornelli 30 Sep 1998 Industrial Organization L51 O31 O34