1. ZEW-Wirtschaftsanalysen Vol. 8 // 1997

    Nachhaltigkeit

  2. ZEW Discussion Paper No. 97-30 // 1997

    Exploring the Tail of Patented Invention Value Distributions

    We explore the tail of patented invention value distributions by using value estimates obtained directly from patent holders. The paper focuses on those full-term German patents of the application year 1977…

  3. ZEW Discussion Paper No. 97-29 // 1997

    Interpreting Estimation Results of Euler Equation Investment Models when Factor Markets are Imperfectly Competitive

    In this paper the standard Euler equation investment model with imperfectly competitive product markets is extended for imperfectly competitive structures on the factor markets: labour markets and markets for…

  4. ZEW Discussion Paper No. 97-27 // 1997

    Citation Frequency and the Value of Patented Innovation

    Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of…

  5. ZEW Discussion Paper No. 97-20 // 1997

    Innovation und Information Technology Services

    The missing effect of investments of firms in information and communication technologies on productivity is studied by various recent papers (e.g. Olinerand Sichels 1994, Landauer 1995, Brynjolfsson and Hitt…

  6. ZEW Discussion Paper No. 97-18 // 1997

    New Technology-Based Firms in Germany: A Survey of Recent Evidence

    Non technical summaryThe paper provides an overview of some of the recent research on New Technology Based Firms in Germany and covers issues from firm formation dynamics, the regional distribution and location…