@article{publication-1039,
	author={Dietl, H and Gr{\"u}tter, Andreas and Lutzenberger, M},
	issn={1446-9022},
	journal={Review of Network Economics},
	number=2,
	pages={231-246},
	publisher={Network Economics Consulting Group},
	title={Deregulation of letter markets and its impact on process and product innovation},
	volume=7,
	year=2008,
}