@phdthesis{publication-21029,
	author={Bachmann, Patrick},
	editor={Algesheimer, René and Natter, Martin},
	faculty={Faculty of Business, Economics and Informatics},
	institution={University of Zurich},
	pages=191,
	title={Customer lifetime value: Relevance, improvement and implementation of existing models in non-contractual settings},
	year=2020,
}