@inbook{publication-912,
	address={Cheltenham},
	author={Jaag, C and Koller, M and Trinkner, U},
	booktitle={Progress in the Competitive Agenda in the Postal and Delivery Sector},
	doi={10.4337/9781848447288.00014},
	editor={Crew, M A and Kleindorfer, P R},
	isbn={978 1 84844 060 9},
	pages={113-127},
	publisher={Edward Elgar},
	title={Calculating the cost of the Universal Service Obligation: The need for a global approach},
	year=2009,
}