1. Intangible Assets: Measurement, Drivers, Usefulness;Gu,2002
2. Intangible Assets: Values, Measures, and Risks;Hand,2003
3. Performance Pay and Productivity;Lazear,1995
4. 150 Years of Patent Protection;Lerner,2000
5. Intangibles: Management, Measurement, and Reporting;Lev,2001