@article {michalakelis2008impact,
	title = {Impact of cross-national diffusion process in telecommunications demand forecasting},
	journal = {Telecommunication Systems},
	volume = {39},
	number = {1},
	year = {2008},
	pages = {51{\textendash}60},
	publisher = {Springer US},
	author = {Michalakelis, Christos and Dede, Georgia and Varoutas, Dimitris and Sphicopoulos, Thomas}
}
