@article {koutroumpis2009broadband,
	title = {Broadband hedonic price index: A firm-level study},
	journal = {Proceeding 8th Conference Telecom Techno-Economics},
	volume = {1},
	year = {2009},
	pages = {18},
	author = {Koutroumpis, P and Michalakelis, Ch and Varoutas, D}
}
