@article{publication-917,
	author={Dietl, H and Gr{\"u}tter, A and Lutzenberger, M},
	issn={1783-5917},
	journal={Competition and Regulation in Network Industries},
	number=1,
	pages={3-15},
	publisher={Intersentia NV},
	title={Defensive competitive strategies in two-sided markets: The example of the mail industry},
	volume=10,
	year=2009,
}