Grabowski, Henry and Kyle, Margaret (2012) Consolidation and Productivity in the Pharmaceutical Industry. In: Handbook of the Economics of the BioPharmaceutical Industry Handbook of the Economics of the BioPharmaceutical Industry. Chapter 18.

Grabowski, Henry and Kyle, Margaret (2007) Generic Competition and Market Exclusivity Periods in Pharmaceuticals. Managerial and Decision Economics, 28 (4-5). pp. 491-502.