@unpublished{publication-14939,
	author={K{\"o}nig, Michael D and Lorenz, Jan and Zilibotti, Fabrizio},
	institution={Centre for Economic Policy Research},
	issn={0265-8003},
	number=8843,
	pages=53,
	series={CEPR Discussion Papers},
	title={Innovation vs. imitation and the evolution of productivity distributions},
	year=2012,
}