@article {Katsianis2001,
	title = {The financial perspective of the mobile networks in Europe},
	journal = {IEEE Personal Communications},
	volume = {8},
	number = {6},
	year = {2001},
	pages = {58-64},
	author = {Katsianis, D and Welling, I and Yl{\"o}nen, M. and Varoutas, D and Sphicopoulos, T and Elnegaard, NK and Olsen, B.T. and Budry, L.}
}
