@inbook{publication-623,
	address={Cheltenham, UK},
	author={Maegli, Martin and Jaag, Christian and Koller, Martin and Trinkner, Urs},
	booktitle={Reinventing the postal sector in an electronic age},
	editor={Crew, M A and Kleindorfer, P R},
	isbn={978-1-84980-360-1},
	pages={109-122},
	publisher={Elgar},
	series={Advances in regulatory economics series},
	title={Postal markets and electronic substitution: implications for regulatory practices and institutions in europe},
	year=2011,
}