Czarnitzki, Dirk; Hussinger, Katrin; Leten, Bart - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
market value of firms beyond their R&D stocks. This paper goes one step further and distinguishes between different types of … results from a market value model for a sample of large, R&D-intensive U.S., European and Japanese firms show that patents …