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Analysing the new IFS-Leverhulme database on over 200 major British ®rms since 1968 we show that patents have an economically and statistically signi®cant impact on ®rm-level productivi...
On the Value–Volatility Relationship in a Real Options Model
investment analysis option-pricing theory finance nonlinear stochastic differential equation
2009/5/7
In the analytical real options approach, the most important proposition that the value of the investment opportunity increases as the volatility increases has been proved by assuming the convexity of...
Real Options in an Oligopoly Market
investment decision strategic substitution NPV criterion sequential investment
2009/5/7
This paper considers strategic entry decisions in an oligopoly market when the underlying state variable follows a geometric Brownian motion. It is shown that, even in the oligopoly case, three types...