- How innovative is the Swiss industry? A theory based analysis using a system of Indicators, in: International Innovation Management – Formation of international processes of innovations to create long term advantages in competition, Editors: O. Gassmann and M. von Zedtwitz, München, Verlag Beck-Vahlen, pp. 231-258, 1996, with Spyros Arvanitis and Heinz Hollenstein.
- Determinants of patent activity in the Swiss industry – Poisson and Negativ-Binomial models using firm data, Swiss National Science Foundation Project ‘Operating Profits and Innovation’, 1997, Zürich, with Spyros Arvanitis.
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