1. Toward Better Measurement of Innovation and Intangibles;Anna M Aizcorbe;Survey of Current Business,2009
2. Patenting and Research and Development: A Global View;Mariano Bosch;World Bank Policy Research Working,2005
3. Technical Performance and Firm Size: Analysis of Patents and Publications of U.S. Firms;Alok K Chakrabarti;Small Business Economics,1990
4. Measuring Innovative Performance: Is There An Advantage In Using Multiple Indicators?;John Hagedoorn;Research Policy,2003