@inbook{publication-1141,
	address={Cheltenham, UK; Northampton, MA, USA},
	author={Jaag, C and Trinkner, U},
	booktitle={Competition and Regulation in the Postal and Delivery Sector},
	editor={Crew, M A and et al},
	isbn={978-1-84720-507-0},
	pages={136-149},
	publisher={Edward Elgar},
	series={Advances in Regulatory Economics},
	title={Pricing in competitive two-sided mail markets},
	year=2008,
}