@unpublished{publication-5569,
	author={Buehler, Stefan and Schmutzler, Armin},
	institution={University of Zurich},
	number={No. 409},
	series={Working paper series / Socioeconomic Institute},
	title={Intimidating Competitors Endogenous Vertical Integration and Downstream Investment in Successive Oligopoly},
	year=2005,
}